Which Doctor to Consult for Persistent Low-Grade Fever?

Introduction

A low-grade fever that stays for days or keeps coming back is more than just a minor inconvenience. While a single episode of mild fever often resolves on its own, a persistent low-grade fever — one that lingers beyond a week or two — deserves proper medical attention. The challenge many patients face is not knowing which doctor to see first.

The answer depends on your symptoms, how long the fever has lasted, and what other signs accompany it. For most people, the right starting point is a General Physician or internal medicine specialist. These doctors are trained to evaluate a wide range of causes — from common infections to complex systemic conditions — and can guide you to a specialist if needed.

This article helps you understand persistent low-grade fever, what might be causing it, and exactly which type of doctor you should consult at each stage. It is written for patients and families in Hyderabad and across Telangana who are looking for clear, trustworthy guidance.

For persistent low-grade fever, consult a General Physician or Internal Medicine specialist first. They can assess common causes such as viral infection, urinary tract infection (UTI), tuberculosis, sinus infection, inflammatory disease, thyroid problems, medicine-related fever, and other systemic causes. If fever persists, recurs, or is associated with weight loss, night sweats, cough, lymph node swelling, rash, joint pain, or abnormal test results, you may be referred to an Infectious Disease specialist, Pulmonologist, Rheumatologist, or Hematologist/Oncologist, depending on your specific findings.

A low-grade fever is generally defined as a body temperature between 99°F (37.2°C) and 100.4°F (38°C) when measured orally. While this range may seem only slightly above normal, a fever that persists continuously or recurs repeatedly over more than 2-3 weeks is medically significant and needs assessment.

Normal body temperature varies slightly from one person to another and can fluctuate during the day, typically lowest in the early morning and slightly higher in the evening. This is why doctors often ask patients to record their temperature at different times of day.

A persistent low-grade fever is different from:

• A single fever episode that resolves within a few days
• A high fever (above 103°F/39.4°C) requiring emergency attention
• Normal evening warmth that does not cross the threshold

If your temperature consistently reads above 99°F over many days — especially in the evenings — and you also feel tired, experience night sweats, or notice other symptoms, please see a doctor rather than waiting for it to resolve on its own.

Many patients ignore a low-grade fever as "just tiredness" or a lingering post-viral effect. While that is sometimes the case, a persistent low-grade fever can be the early signal of a more serious underlying issue.

Conditions that can present with persistent low-grade fever include:

• Urinary Tract Infections (UTIs): Especially in women and elderly patients
• Sinus or dental infections: Chronic infections that are easy to overlook
• Tuberculosis (TB): It is one of the most important causes in India, particularly when fever is accompanied by cough, weight loss, and night sweats
• Autoimmune diseases: Like rheumatoid arthritis (RA), lupus, and inflammatory bowel disease
• Thyroid disorders: Hyperthyroidism can occasionally cause low-grade fever
• Liver and kidney disorders: Chronic infections or inflammation in these organs
• Drug-induced fever: Some medications can cause persistent fever as a side effect
• Viral infections: Including Epstein-Barr virus (the cause of glandular fever) and others
• In rare cases: Early signs of blood disorders or malignancies

Not every persistent low-grade fever points to something serious — but each one deserves professional evaluation to rule out important causes and to get the right treatment.

Use the table below to identify which doctor to consult based on your specific symptoms.

Red-Flag Symptoms: Seek Emergency Care Immediately

Do not wait for an appointment if you or a family member has a fever along with any of the following warning signs:

• Difficulty breathing or breathlessness
• Chest pain
• Altered consciousness, Confusion, or disorientation
• Fainting or near-fainting episodes
• Severe fatigue or inability to stand
• Stiff neck with headache (may suggest meningitis)
• Persistent or uncontrollable vomiting
• Severe or worsening headache
• Signs of dehydration (no urination, dry mouth, sunken eyes)
• Coughing up blood
• Very high fever above 103°F (39.4°C)
• Unexplained rapid weight loss (more than 3–4 kg over a few weeks)
• Profuse night sweats soaking clothing or bedsheets
• Significantly enlarged lymph nodes in neck, armpit, or groin
• Widespread skin rash with fever and low blood pressure symptoms
• Fever that is lasting more than 2–3 weeks without any identified cause
• Fever in a patient who is immunocompromised (cancer, HIV, on steroids, post-transplant)
• Fever in an elderly person with sudden confusion

If any of these are present, go to the nearest emergency department or call for emergency assistance immediately. Do not attempt to manage these situations at home.

The Right First Step for Most Patients

For the vast majority of patients with persistent low-grade fever, the General Physician (GP) or Internal Medicine specialist is the best first doctor to consult. This is true regardless of whether you have a clear suspected cause or no obvious explanation at all.

General Physicians and Internal Medicine doctors are trained to:

• Take a detailed medical history, including travel history, medication history, and any recent infections
• Perform a thorough physical examination
• Order and interpret initial investigations such as blood tests, urine tests, and chest X-rays
• Identify or rule out common causes such as viral infections, bacterial infections, urinary tract infections, thyroid disease, and medication side effects
• Refer you to the appropriate specialist if initial evaluation points to a specific organ system or condition

You should specifically see a General Physician or Internal Medicine specialist first if:

• Your fever has persisted for more than a week and you are not sure what is causing it
• You feel generally unwell but cannot identify a specific problem area
• Your fever is mild but keeps coming back every few days or weeks
• You have fatigue, loss of appetite, or generalised body aches along with the fever
• You have recently recovered from a viral illness but your temperature has not fully normalised
• You suspect a medication you are taking might be causing the fever

For Complex, Prolonged, or Unusual Infections

An Infectious Disease (ID) specialist has advanced training in diagnosing and treating infections that are difficult to identify or have not responded to standard treatment. They are not always the first doctor you need — but they are the right specialist when:

• Fever has persisted for more than 2–3 weeks, and a clear cause has not been found despite initial tests
• There is a suspected or confirmed diagnosis of tuberculosis (TB) requiring specialist management
• You have recently returned from international travel or visited areas known for specific infections such as malaria, typhoid, dengue, or leptospirosis
• You have had unusual or rare infections, or infections in atypical locations
• Your fever has not responded to the initial treatment prescribed by a general physician
• You are immunocompromised — for example, you are on chemotherapy, long-term steroids, or have HIV — and have developed a fever
• Fever is associated with new or unexplained lymph node swelling that could have an infectious cause
• There is concern about antibiotic-resistant infections or healthcare-associated infections

Infectious Disease specialists are essential partners in evaluating what is called Fever of Unknown Origin (FUO) — a fever exceeding 38.3°C (101°F) on multiple occasions over at least three weeks, with no identified cause despite initial workup.

When the Lungs or Airways May Be Involved

A Pulmonologist (also called a chest or respiratory physician) specialises in conditions affecting the lungs, airways, and respiratory system. You should see a Pulmonologist when a persistent low-grade fever is accompanied by:

• Persistent cough lasting more than 2-3 weeks, especially a cough with mucus or blood-streaked sputum
• Breathlessness or shortness of breath on exertion or at rest
• Chest pain or tightness
• Night sweats combined with cough and weight loss — this combination raises the possibility of tuberculosis or other lung infections
• Abnormal findings on a chest X-ray or CT scan of the chest
• Known or suspected tuberculosis (TB): TB is a significant concern in India, and a Pulmonologist plays a main role in its diagnosis and management
• Recurrent chest infections or bronchitis
• Suspected fungal lung infections in immunocompromised patients

It is important to emphasise that not every cough with fever is tuberculosis. However, the combination of persistent low-grade fever, cough, night sweats, and weight loss in the Indian context should always be evaluated by a Pulmonologist alongside a General Physician to rule out TB and other serious lung conditions.

When Autoimmune or Inflammatory Disease Is Suspected

A Rheumatologist specialises in autoimmune diseases, inflammatory conditions, and disorders affecting joints, muscles, and connective tissues. Persistent low-grade fever is a known feature of many autoimmune diseases.

You should see a Rheumatologist when fever is associated with:

• Joint pain or swelling — particularly symmetrical joint involvement affecting the hands, wrists, knees, or ankles
• Morning stiffness lasting more than 30 minutes — a hallmark symptom of inflammatory arthritis
• Skin rash — such as a butterfly-shaped rash across the cheeks (as seen in lupus), or other unexplained rashes
• Dry eyes or dry mouth along with joint symptoms (suggesting Sjögren's syndrome)
• Muscle pain or weakness without a clear cause
• Elevated inflammatory markers (Like ESR and CRP) on blood tests without an identified infection
• Abnormal autoimmune blood tests (such as ANA, Anti-dsDNA, or RF) suggesting systemic autoimmune disease

Conditions managed by a Rheumatologist that can cause persistent low-grade fever include:

• Rheumatoid Arthritis
• Systemic Lupus Erythematosus (SLE)
• Adult-onset Still's disease
• Polymyalgia rheumatica
• Vasculitis
• Inflammatory bowel disease (shared care with Gastroenterologist)

When Blood Tests or Imaging Raise a Concern

A Hematologist specialises in blood disorders, and an Oncologist specialises in cancers. These specialists are not the first port of call for persistent low-grade fever — but they become essential when specific findings emerge during the evaluation.

You may need to see a Hematologist or Oncologist if:

• Blood tests reveal abnormal white blood cell, red blood cell, or platelet counts that do not have a clear infectious explanation
• Imaging or physical examination shows significantly enlarged lymph nodes in multiple areas of the body
• You have unexplained and significant weight loss (more than 10% of body weight over a few months)
• Profuse night sweats occur alongside fever and weight loss without an infectious cause — this combination (B symptoms) can indicate lymphoma
• There is unexplained anaemia despite adequate nutrition and no identified chronic disease
• A bone marrow biopsy or other advanced tests are required to reach a diagnosis

It is important to note that the majority of patients with persistent low-grade fever do not have cancer. However, cancer and blood disorders are part of a thorough differential diagnosis, and any suspicion raised during the initial workup must be properly investigated.

Low-Grade Fever with Cough

A combination of low-grade fever and cough is one of the most common presentations seen by doctors in India. The causes range from mild post-viral cough to serious lung infections.

Common causes include:

• Post-viral cough (cough persisting after a cold or flu)
• Bacterial chest infection or bronchitis
• Sinusitis with post-nasal drip
• Tuberculosis (TB) — especially when the cough persists beyond two to three weeks
• Community-acquired pneumonia
• Fungal lung infections (in immunocompromised patients)

Start with a General Physician. They will listen to your lungs, examine your sinuses, and arrange a chest X-ray and basic blood tests. If findings suggest a lung or chest problem, a Pulmonologist will be the next specialist involved. If TB is suspected, specific tests including a sputum examination, CBNAAT/GeneXpert, and TB-IGRA blood test may be arranged.

Night sweats — waking up drenched in sweat despite normal room temperature — along with persistent low-grade fever is a symptom combination that always requires evaluation.

Common causes include:

• Tuberculosis (TB)
• Lymphoma (Hodgkin's or non-Hodgkin's)
• HIV infection
• Other chronic infections
• Menopause-related hormonal changes (in women of appropriate age)
• Anxiety or stress-related sweating (less likely to cause fever)
• Certain medications

Consult a General Physician first. Depending on what the initial blood tests and chest imaging show, you may then be referred to a Pulmonologist (if TB is suspected), an Infectious Disease specialist (if another chronic infection is found), or a Hematologist/Oncologist (if lymphoma or other blood disorder is on the differential). Do not dismiss persistent night sweats combined with fever — this combination deserves proper investigation.

Unexplained weight loss — losing weight without trying — combined with persistent low-grade fever is a combination that should always be investigated promptly.

Possible causes include:

• Tuberculosis
• Hyperthyroidism
• Chronic inflammatory or autoimmune disease
• Gastrointestinal conditions such as inflammatory bowel disease
• Malignancies (including lymphoma, leukaemia, or solid organ cancers)
• Chronic infections (including HIV, hepatitis)

A General Physician or Internal Medicine specialist should evaluate this presentation first. They will carry out a structured investigation that includes blood tests (including thyroid function, inflammatory markers, and relevant tumour markers if indicated), imaging, and specific infection tests. Further referral to a Pulmonologist, Rheumatologist, Gastroenterologist, or Oncologist depends on what the tests reveal.

When persistent low-grade fever is associated with joint pain, joint swelling, or skin rash, the differential diagnosis shifts significantly toward autoimmune and inflammatory diseases.

Common causes include:

• Rheumatoid Arthritis
• Systemic Lupus Erythematosus (SLE)
• Reactive arthritis (triggered by a prior infection)
• Viral arthritis (e.g., chikungunya, dengue)
• Adult-onset Still's disease
• Psoriatic arthritis (when rash and joint pain are both present)

Consult a General Physician first, who will arrange blood tests including ANA, RF, Anti-CCP, ESR, CRP, and other autoimmune markers. If these point toward an inflammatory or autoimmune condition, a Rheumatologist will take over management.

When persistent low-grade fever is accompanied by burning urination, increased urinary frequency, pain in the lower back or flanks, cloudy urine, or a urinary tract infection (UTI) or kidney involvement should be considered.

Important points:

• UTIs, mainly in women and elderly patients, can present with persistent low-grade fever even without classic urinary symptoms
• Complicated UTIs involving the kidneys (pyelonephritis) can cause prolonged low-grade fever with back pain and fatigue
• Prostate infections in men (prostatitis) can cause persistent low-grade fever with urinary symptoms

Consult a General Physician, who will arrange a urine routine examination and urine culture. If the infection is complicated, involves the kidneys, or recurs frequently, a Urologist may be involved in further management.

It is not uncommon for patients to report a persistent low-grade temperature for days or even weeks after recovering from a viral illness such as COVID-19, influenza, dengue, chikungunya, or Epstein-Barr virus (EBV) infection.

What can happen after a viral infection:

• The body's inflammatory response may remain mildly elevated even after the virus has cleared
• Post-viral fatigue and mild temperature elevation are well-recognised phenomena
• In some cases, the original diagnosis may have been incorrect and a different condition could be present
• Secondary bacterial infections can develop in the recovery phase

A General Physician is the right doctor for this presentation. They will assess whether the fever is truly post-viral and resolving, or whether something else requires investigation. If fever persists beyond 2–3 weeks post-illness, further testing is appropriate.

Persistent low-grade fever in elderly patients (those above 60–65 years of age) requires particular care and attention because:

• Elderly patients may not mount a high fever even in the presence of a serious infection — a low-grade fever can represent a significant illness
• The classic symptoms of infections such as UTI, pneumonia, or appendicitis may be atypical or absent in older adults
• Multiple medical conditions and medications can complicate the clinical picture
• Confusion or a sudden change in behaviour in an elderly patient with fever is a medical emergency and requires immediate hospital evaluation

Common causes in elderly patients include UTIs, pneumonia, TB, medication-induced fever, autoimmune conditions, and malignancy. Consult a General Physician or Internal Medicine specialist without delay. If confusion is present, go to the emergency department immediately.

While this article primarily addresses adult patients, it is important to mention that persistent low-grade fever in children should always be evaluated by a Paediatrician. Children have different normal temperature ranges and different common causes compared to adults.

Common causes in children include:

• Viral infections (the most common cause)
• Recurrent tonsillitis or ear infections
• Urinary tract infections
• Tuberculosis (in India)
• Juvenile idiopathic arthritis (JIA)
• Rare genetic or immune disorders

A Paediatrician will assess the child thoroughly and refer to a Paediatric Infectious Disease specialist or Paediatric Rheumatologist if needed. Do not give children aspirin for fever — always follow a paediatrician's advice on fever management.

Depending on your symptoms and clinical examination, your doctor may arrange some or all of the following investigations:

Initial Blood Tests

• Complete Blood Count (CBC): It assesses white blood cells, red blood cells, and platelets; can suggest infection, anaemia, or blood disorder
• Erythrocyte Sedimentation Rate (ESR) and C-Reactive Protein (CRP): Markers of inflammation in the body
• Peripheral Blood Smear: Helps identify blood cell abnormalities or malaria parasites
• Liver Function Tests (LFT) and Kidney Function Tests (KFT): Evaluate liver and kidney health
• Blood cultures: To detect bacteria or fungi circulating in the blood
• Thyroid Function Tests (TFT): To check for thyroid-related causes of fever
• Dengue NS1 antigen and antibody tests, Typhoid Widal/Typhidot: For tropical infections
• Malaria Rapid Diagnostic Test (RDT) or thick blood film: If malaria is suspected
• HIV test: When indicated

Chest and Imaging Tests

• Chest X-ray: Essential initial investigation; can reveal TB, pneumonia, or other lung conditions
• CT scan of the chest/abdomen: For more detailed imaging when X-ray is inconclusive
• Ultrasound abdomen: For liver, spleen, kidney, and lymph node assessment

Infection-Specific Tests

• Sputum examination and CBNAAT/GeneXpert: For tuberculosis diagnosis
• TB-IGRA (Interferon-Gamma Release Assay): Blood test for TB exposure
• Mantoux (Tuberculin Skin Test): Supporting test for TB
• Urine routine examination and culture: For urinary tract infection
• Urine for TB (early morning urine samples): When urinary TB is suspected
• Blood PCR for Epstein-Barr virus, CMV, or other viruses: When viral causes are suspected

Autoimmune Tests

• Antinuclear Antibody (ANA) and Anti-dsDNA: For lupus and related conditions
• Rheumatoid Factor (RF) and Anti-CCP: For rheumatoid arthritis
• Complement levels (C3, C4): For autoimmune disease monitoring

Advanced Investigations (when required)

• PET-CT scan: For identifying sites of infection, inflammation, or malignancy
• Echocardiogram: When heart valve infection (endocarditis) is suspected
• Bone marrow biopsy: When blood disorder or lymphoma is suspected
• Lymph node biopsy: For enlarged lymph nodes requiring histological diagnosis
• Bronchoscopy: When lung infection requires direct sampling
  

The treatment of persistent low-grade fever depends entirely on the underlying cause identified through diagnosis. No treatment should be started without a doctor's evaluation.

Infection-Related Treatment

• Bacterial infections: Treated with appropriate antibiotics selected based on culture and sensitivity reports. Never self-medicate with antibiotics.
• Tuberculosis (TB): Treated with a structured multi-drug regimen under the Revised National Tuberculosis Control Programme (RNTCP / National Tuberculosis Elimination Programme) or private sector guidelines — typically a minimum of six months of treatment
• Viral infections: Most viral infections do not require specific antiviral treatment; supportive care, rest, and hydration are the mainstay while the immune system clears the infection
• Malaria/Dengue/Typhoid: Specific treatment under specialist supervision

Autoimmune and Inflammatory Disease Treatment

• Managed with anti-inflammatory drugs, disease-modifying antirheumatic drugs (DMARDs), or biological agents as decided by a Rheumatologist — treatment is long-term and individualised

Thyroid-Related Fever

• Treated with thyroid medications as advised by an Endocrinologist

Drug-Induced Fever

• Identification and withdrawal of the causative medicine under medical supervision. Never stop a prescribed medication without consulting your doctor — some medications cannot be stopped abruptly.

Cancer or Blood Disorder

• Treatment depends on the specific diagnosis — may include chemotherapy, targeted therapy, immunotherapy, or other approaches decided by an Oncologist or Hematologist

General Supportive Measures

• Adequate rest and sleep
• Sufficient hydration
• Nutritious diet to support immune function
• Regular temperature monitoring and recording
• Avoiding self-medication with antipyretics beyond what the doctor advises

PACE Hospitals, Hyderabad, provides a comprehensive multi-specialist approach to evaluating and managing persistent low-grade fever. The following departments are equipped to handle every aspect of fever evaluation and care:

• Department of Internal Medicine and General Medicine: First point of contact for most patients; structured evaluation including history, clinical examination, and initial investigations
• Department of Infectious Diseases: Specialist management of tuberculosis, unusual infections, travel-related infections, Fever of Unknown Origin (FUO), and fever in immunocompromised patients
• Department of Pulmonology and Chest Medicine: Evaluation and treatment of fever with cough, breathlessness, TB, and other lung conditions
• Department of Rheumatology: Diagnosis and treatment of fever with joint pain, rash, autoimmune diseases, and inflammatory disorders
• Department of Haematology and Medical Oncology: Assessment of fever with abnormal blood counts, lymph node swelling, unexplained weight loss, and suspected blood or oncological conditions
• Department of Nephrology and Urology: Management of fever linked to urinary or kidney conditions
• Department of Endocrinology: Evaluation of thyroid-related and other hormonal causes of fever
• Department of Emergency Medicine: Round-the-clock emergency care for high-risk fever presentations and red-flag symptoms

PACE Hospitals supports multi-disciplinary team (MDT) discussions for complex cases where a single specialist may not provide the complete picture — ensuring patients receive a coordinated, accurate diagnosis.

PACE Hospitals, Hyderabad, is a trusted multi-speciality hospital offering comprehensive diagnostic and treatment services across all major medical specialities.

What sets PACE Hospitals apart for fever evaluation:

• Multi-speciality under one roof: From General Medicine to Infectious Diseases, Pulmonology, Rheumatology, and Oncology — patients benefit from coordinated specialist care without the need to visit multiple hospitals
• Advanced diagnostics: PACE Hospitals is equipped with state-of-the-art laboratory facilities, digital radiology, CT scanning, PET-CT, bronchoscopy, and pathology services — enabling rapid and accurate diagnosis
• Experienced physician team: Senior consultants in Internal Medicine and multiple specialities bring clinical depth to complex fever evaluations
• NABL-accredited laboratory: Ensuring accurate and high-quality test results
• Dedicated Infectious Disease services: Enabling structured workup for Fever of Unknown Origin, TB, and travel-related infections
• Convenient location in Hyderabad: Patients from Hyderabad, Secunderabad, and Telangana can access it.
• Patient-centred care: Clear communication, thorough patient education, and a caring approach to every consultation 
• Easy appointment booking: Online and phone-based appointment booking for quick access to specialist consultations
  

Persistent low-grade fever — temperature consistently above 99°F (37.2°C) lasting more than one to two weeks — is not something to dismiss or manage at home indefinitely. The right first step for most patients is to see a General Physician or Internal Medicine specialist, who can carry out an organised evaluation and direct you to the right specialist if needed.

Depending on your associated symptoms, you may eventually need to consult an Infectious Disease specialist (for unexplained, prolonged, or travel-related fever), a Pulmonologist (for fever with cough or lung symptoms), a Rheumatologist (for fever with joint pain or rash), or a Hematologist/Oncologist (when blood tests or imaging raise specific concerns).

The most important message: Do not self-medicate and do not delay a consultation if fever persists, recurs, or is accompanied by any red-flag symptoms such as weight loss, night sweats, breathlessness, confusion, rash, swollen lymph nodes, or blood in sputum.

Frequently Asked Questions (FAQs)

Yes, absolutely. A General Physician is specifically trained to evaluate the full range of causes of persistent low-grade fever. They will take a detailed clear medical history, perform a physical examination, and arrange investigations such as a complete blood count, urine tests, chest X-ray, ESR, CRP, and other relevant tests. In most cases, the General Physician either identifies and manages the cause directly or determines which specialist is most appropriate. For most patients, the General Physician is the correct first doctor and will remain the coordinating physician throughout the workup.

You should consider an Infectious Disease specialist if: your fever has persisted for more than two to three weeks without a clear diagnosis; you have recently returned from travel to another country or rural region with tropical infections; initial treatment has not controlled the fever; tuberculosis or an unusual infection is suspected; you are immunocompromised (for example, receiving chemotherapy, on long-term steroids, or living with HIV); or your case meets the criteria for Fever of Unknown Origin (FUO). Your General Physician will typically refer you if this level of specialist input is needed.

Yes, tuberculosis (TB) is one of the important causes of persistent low-grade fever, particularly in India. TB typically causes evening fever — a fever that rises in the afternoon or evening — along with prolonged cough, night sweats, progressive weight loss, and fatigue. However, TB can sometimes present with fever alone or with minimal other symptoms. If you have had persistent low-grade fever for more than two to three weeks, especially with cough or weight loss, please see a General Physician promptly so that TB can be properly evaluated with the appropriate tests. TB is treatable with the right medications.

Yes, a urinary tract infection can cause persistent low-grade fever, sometimes even without the classic burning or frequent urination symptoms — particularly in women and elderly patients. When the infection involves the kidneys (known as pyelonephritis), fever may be accompanied by back pain, chills, and fatigue. Persistent or recurrent UTIs should not be left untreated, as they can lead to kidney complications over time. A urine routine examination and culture test are the key investigations. A General Physician will assess and treat you appropriately, and refer to a Urologist if the infection is recurrent or complicated.

Yes, low-grade fever can be recurring or persistent in a number of autoimmune illnesses. Among these include rheumatoid arthritis, adult-onset Still's disease, polymyalgia rheumatica, vasculitis, and systemic lupus erythematosus (SLE). The body's immune system becomes overactive in autoimmune diseases, causing inflammation that may show up as a prolonged fever. Joint discomfort, skin rashes, exhaustion, or morning stiffness are common side effects of this kind of fever. Autoimmune blood tests like ANA, Anti-dsDNA, and RF will be ordered by a general physician. A rheumatologist will conduct additional testing and treatment if autoimmune illness is suspected or confirmed.

Fever with night sweats should first be evaluated by a General Physician or Internal Medicine specialist, who will arrange initial blood tests and chest imaging. Depending on the findings, you may be referred to a Pulmonologist if tuberculosis or a lung infection is suspected, an Infectious Disease specialist if another chronic infection is identified, a Hematologist or Oncologist if lymphoma or a blood disorder is a concern, or a Rheumatologist if an autoimmune condition is possible. Night sweats combined with fever and unexplained weight loss — known as "B symptoms" — always deserve a thorough medical evaluation.

Fever with persistent cough should first be seen by a General Physician, who will examine your lungs, arrange a chest X-ray, and perform initial blood tests. If the chest X-ray shows abnormalities, or if cough has persisted for more than two to three weeks — particularly with weight loss or night sweats — a Pulmonologist will be involved for further evaluation including sputum tests and CT scanning. If tuberculosis is confirmed or strongly suspected, the Pulmonologist manages the diagnosis and treatment pathway. For fever and cough related to sinusitis, an ENT specialist may be appropriate. Do not ignore a cough lasting more than three weeks.

Fever with joint pain, joint swelling, or morning stiffness should be evaluated starting with a General Physician, who will arrange blood tests including inflammatory markers (ESR, CRP) and autoimmune tests (ANA, RF, Anti-CCP). If the results point to an autoimmune or inflammatory condition, a Rheumatologist will manage the further evaluation and long-term treatment. If the joint symptoms follow a recent infection (such as a throat infection or diarrhoeal illness), reactive arthritis may be considered. Viral arthritis — after dengue or chikungunya — is also common in Hyderabad and is managed by a General Physician in most cases.

Yes, persistent low-grade fever can be effectively treated once the underlying cause is identified. The treatment is specific to the diagnosis — for example, antibiotics for a bacterial infection (including a full course for TB), anti-inflammatory or immunosuppressive medications for autoimmune disease, thyroid medications for hyperthyroidism, or removal of a causative drug. Treating the underlying cause usually resolves the fever. This is why a proper diagnosis is essential before any treatment is started. Please do not self-medicate with antibiotics, anti-fever drugs (antipyretics), or steroids. Unsupervised medication can mask important symptoms, delay diagnosis, and cause harm.

Persistent low-grade fever is a medical symptom — not a diagnosis — and it deserves proper evaluation, not guesswork. Whether your fever has been present for two weeks or two months, whether it comes with cough, night sweats, joint pain, urinary symptoms, or no clear companion symptom at all, there is a structured pathway to finding the answer.

Your first and most important step is to see a General Physician or Internal Medicine specialist, who will carry out an organised evaluation, arrange initial investigations, and refer you appropriately if a specialist is needed. From Infectious Disease to Pulmonology, Rheumatology, and Haematology/Oncology, PACE Hospitals, Hyderabad brings together all the expertise you may need under one roof.

Do not self-medicate. Do not dismiss a fever that has persisted beyond two weeks. And do not delay if you or a loved one experiences any red-flag symptoms — breathlessness, confusion, significant weight loss, coughing blood, enlarged lymph nodes, or severe fatigue. These are signals that should prompt immediate medical attention.

Early evaluation leads to early diagnosis — and early diagnosis leads to the best possible outcomes.