What should you know about dengue skin rash?

Dengue may cause a widespread red or blotchy eruption, sometimes with itching, as the illness evolves. Skin appearance varies with skin tone and lighting, and a rash may be subtle. A rash can also result from a medicine, heat, allergy, eczema, psoriasis, ringworm, scabies, or another infection. Someone with dengue may develop a rash; seeing a rash does not mean the person has dengue.

A clinician assesses the rash alongside fever pattern, headache or body aches, hydration, bleeding, alertness, and medicines taken. Take a clear photograph in good light if the rash changes before the appointment, and note when it began and where it spread. Avoid relying on a photograph for diagnosis.

Keep the skin cool, use loose clothing, and avoid fragranced products, hot showers, and scratching. A cool damp cloth may ease irritation. Drink fluids according to medical advice and rest. Do not apply steroid mixtures, antibiotics, household chemicals, or herbal preparations without guidance. Ask before taking a medicine for fever, pain, or itch, especially if dengue is suspected.

If the eruption follows a new medicine, tell a clinician the name, dose, and timing. Other possible explanations include [Drug Rash](/conditions/drug-eruption/), [Heat Rash](/conditions/heat-rash/), [Contact Dermatitis](/conditions/contact-dermatitis/), and [Scabies](/conditions/scabies/). The correct treatment depends on examination rather than the word dengue alone.

Seek urgent medical care for severe abdominal pain, repeated vomiting, bleeding, fainting, confusion, unusual sleepiness, breathing difficulty, cold or clammy skin, or inability to drink. Obtain prompt help for bruising that appears quickly, blood in vomit or stool, facial swelling, wheezing, blisters, or skin peeling after a medicine. These features require assessment even if the rash looks mild.

Could this rash be dengue, a medicine reaction, heat rash, or an infection? What symptoms should I monitor at home? Which fever, pain, or itch medicines are appropriate? How can I maintain hydration? When should I return for reassessment?