Chikungunya or Dengue? The Tests That Tell Them Apart

Quick answer: Dengue and chikungunya are both spread by the Aedes mosquito and both cause sudden high fever. Chikungunya is marked by severe joint pain and swelling (often hands, wrists and ankles) that can last weeks or months; dengue is marked by severe body ache, pain behind the eyes, falling platelets and a risk of serious complications around days 3–7. To tell them apart: for dengue, test NS1 antigen (first 5 days) and dengue IgM (after day 5); for chikungunya, test chikungunya RT-PCR (first week) or chikungunya IgM (after about day 5). A CBC helps in both — low platelets point more towards dengue.

Every post-monsoon season, Gurugram sees both infections — sometimes in the same household, and occasionally together in the same person. Because early symptoms overlap, testing matters: dengue needs close platelet monitoring, while chikungunya needs management of prolonged joint pain.

Symptoms Side by Side

Chikungunya

• Sudden high fever
• Severe joint pain — often both sides of the body, small joints of hands and feet, wrists, ankles and knees
• Joint swelling and morning stiffness
• Rash
• Headache, muscle pain, fatigue
• Joint pain can persist for weeks to months in some people, especially older adults

Dengue

• Sudden high fever
• Severe headache and pain behind the eyes
• Intense muscle and bone pain ("breakbone fever")
• Rash
• Nausea and vomiting
• Falling platelet count, sometimes with bleeding
• A critical phase around days 3–7 when the fever falls — see dengue platelet count monitoring

The Tests That Tell Them Apart

Dengue Tests

• NS1 antigen: detects the virus in the first 5 days of fever
• Dengue IgM: antibodies from about day 5 onwards
• Dengue IgG: past or secondary infection

Chikungunya Tests

• Chikungunya RT-PCR: detects the virus in the first week of symptoms — see our molecular diagnostics
• Chikungunya IgM: antibodies from about day 5 onwards

Supporting Tests

• CBC: platelets and white cells fall more often and more markedly in dengue. See CBC explained
• Liver function test: enzymes may be raised in both, more often in dengue
• CRP/ESR: inflammation markers — see CRP explained
• Malaria and typhoid tests if the picture is unclear — see fever panel

Choosing the Right Test by Day of Fever

• Day 1–5: NS1 (dengue) + chikungunya RT-PCR, with CBC
• Day 5 onwards: dengue IgM + chikungunya IgM, with CBC
• Your doctor may combine tests depending on symptoms and timing

Treatment Basics

There's no specific antiviral for either. Care focuses on:

• Fluids and rest
• Paracetamol for fever and pain, as advised
• Avoid ibuprofen, aspirin and other NSAIDs until dengue has been ruled out — they increase bleeding risk in dengue
• For chikungunya joint pain after dengue is ruled out, your doctor may suggest other pain relief and physiotherapy

Persistent Joint Pain After Chikungunya

Some people, particularly older adults and those with existing arthritis, have joint pain for months. If pain persists beyond a few weeks, your doctor may check CRP, ESR, RA factor or anti-CCP to look for inflammatory arthritis, and may advise X-rays of affected joints.

When to Go to Hospital

• Bleeding from gums, nose or in stool or urine
• Severe abdominal pain or persistent vomiting
• Breathlessness, confusion or extreme weakness
• Very low urine output
• Severe joint pain with inability to walk, in elderly patients

Prevention — Same for Both

• Empty standing water weekly — coolers, pots, plant trays, tyres
• Use repellents during the day — Aedes mosquitoes bite in daylight
• Full sleeves and window screens

Frequently Asked Questions

How can I tell chikungunya from dengue?

Chikungunya typically causes severe joint pain and swelling, while dengue causes intense body ache, pain behind the eyes and falling platelets. Blood tests are needed to confirm which one it is.

Which test confirms chikungunya?

Chikungunya RT-PCR confirms infection in the first week of symptoms. Chikungunya IgM antibodies are useful from about day 5 onwards.

Does chikungunya lower platelet count?

Chikungunya can mildly lower platelets, but a significant platelet drop is more typical of dengue.

Can you have dengue and chikungunya together?

Yes, co-infection can occur because both are spread by the same mosquito. Testing for both may be advised.

How long does chikungunya joint pain last?

Joint pain often improves within a few weeks, but in some people it can last months.

Can I get dengue and chikungunya tests at home in Gurugram?

Yes. Aarvak offers home sample collection for dengue, chikungunya and CBC tests across Sector 67, Sohna Road and nearby areas.

Book Fever Tests in Gurugram

Fever with body or joint pain? Book dengue NS1/IgM, chikungunya tests and CBC with home sample collection. Call +91 92663 33711.

This article is for general information only. Please consult a doctor for diagnosis and treatment of fever.