My child has a rash with fever. Is it an emergency?
Quick answer
A rash appearing alongside a fever in a child can range from a harmless viral rash to dangerous conditions like dengue or meningococcal disease. The glass test is critical: if a rash does not fade when pressed with a clear glass tumbler, it is a medical emergency. Dr. Bramhini Nareddy examines rashes and fevers in Tirupati until 10 pm.
Action guide
When to seek care
Emergency now (Call 108)
- Non-blanching rash: spots do NOT fade when pressed firmly with a clear glass (petechiae/purpura)
- Tiny red or purple pinprick spots resembling blood under the skin
- Child is abnormally drowsy, confused, or has a stiff neck
- Fast breathing, cold extremities, or severe lethargy
- Peeling of skin or severe redness around lips, tongue, and eyes
See a doctor today
- Rash spreading rapidly across the entire body with high fever
- Child is unusually irritable, crying when handled, or not eating
- Blisters containing fluid (chickenpox or hand-foot-mouth disease)
- Swollen hands, feet, or lymph nodes in the neck
Care at home & watch
- Rash fades completely to white when pressed with a glass and returns when pressure is lifted
- Child is playful, drinking well, and smiling
- Fever is mild and child is comfortable between doses of paracetamol
Diagnosis
Common possible causes
Viral exanthemFine pink rash appearing as fever begins to settle. Common and harmless.Read more ›Dengue petechiaeTiny red bleeding spots on skin with high fever and low platelets.Read more ›Hand, foot & mouth diseaseBlister-like spots on palms, soles, and mouth ulcers with mild fever.Read more ›Measles / RubellaHigh fever, cough, red eyes, and rash starting behind ears spreading down.Read more ›
Frequently asked questions
How do I do the 'glass tumbler test'?
Press the side of a clear glass tumbler firmly against the rash. If the spots fade under pressure, it is likely blanching (reassuring). If the spots stay red/purple through the glass, seek emergency care immediately.
Can teething cause a rash and fever?
Teething may cause mild drooling rash around the chin, but it does NOT cause a high fever or body-wide rash. Check with your doctor.
Dr. Bramhini Nareddy
Paediatrician-Neonatologist · Open until 10 pm daily.
Medically reviewed by Dr. Bramhini Nareddy, MD (Paediatrics) · Last updated October 2026