What is the treatment for heat rash?

Treatment for Heat Rash

For heat rash (miliaria rubra), the most effective treatment is cooling the affected area, keeping it dry, and applying mild topical corticosteroids like hydrocortisone cream for symptomatic relief of itching. 1, 2

Immediate Management

• Remove from heat source: Move to a cool, dry environment

• Cool the skin:

  • Apply cool compresses to affected areas
  • Take tepid showers with pH-neutral soaps 3
  • Pat skin dry (don't rub) with clean, smooth towels 3

• Reduce inflammation and itching:

  • Apply over-the-counter hydrocortisone cream (0.5-1%) to affected areas up to 3-4 times daily 2
  • For children under 2 years, consult a doctor before using hydrocortisone 2

Additional Measures

• Keep skin dry: Avoid excessive sweating

  • Wear loose-fitting, lightweight cotton clothing 3
  • Avoid synthetic materials that trap heat and moisture 3
  • Stay in air-conditioned environments when possible

• Avoid irritants:

  • Don't use greasy creams or ointments that can block pores 3
  • Avoid perfumes, alcohol-based products, and harsh soaps 1
  • Don't scrub or manipulate the affected skin 3

When to Seek Medical Attention

• If heat rash persists beyond 3-4 days despite home treatment
• If there are signs of infection (increasing redness, warmth, pain, pus)
• If accompanied by fever or other systemic symptoms
• For severe, widespread rash that doesn't respond to over-the-counter treatments

Prevention Strategies

• Avoid excessive heat and humidity when possible
• Wear breathable, lightweight clothing
• Use air conditioning or fans to keep cool
• Take cool showers after sweating
• Change wet clothing promptly
• Apply powder to susceptible areas to absorb moisture (avoid in infants)

Special Considerations

• For infants: More susceptible to heat rash; keep cool, dress lightly, and avoid overdressing 4
• For athletes: Allow adequate cooling between workouts; persistent heat rash can impair heat tolerance and increase risk of heat illness 5
• For elderly: More vulnerable to heat-related conditions; monitor closely and ensure adequate cooling 6

Heat rash typically resolves within a few days with proper care. The key is reducing heat exposure, keeping the affected area cool and dry, and using mild topical corticosteroids for symptomatic relief.