From the Guidelines
Heat rash (prickly heat) treatment primarily involves cooling the skin and reducing sweating, with the goal of alleviating symptoms and preventing complications that could impact morbidity, mortality, and quality of life. To manage heat rash effectively, it's crucial to move to a cooler, less humid environment and wear loose, lightweight clothing to allow the skin to breathe, as this can help reduce sweating and prevent further irritation 1. Keeping affected areas clean and dry is also essential, which can be achieved by taking cool showers or baths and patting the skin dry afterward. Some key considerations for treatment include:
- Applying calamine lotion to soothe the skin or using a mild hydrocortisone cream (0.5-1%) for itching, applying a thin layer to affected areas up to twice daily for no more than a week
- Avoiding the use of heavy ointments or creams that contain petroleum or mineral oil, as these can block pores and worsen the condition
- Considering an oral antihistamine like diphenhydramine (Benadryl) 25-50mg every 4-6 hours for severe itching It's also important to note that heat rash occurs when sweat ducts become blocked and sweat is trapped under the skin, causing inflammation and the characteristic tiny, itchy bumps. If the rash worsens, shows signs of infection (increasing pain, swelling, warmth, or pus), or doesn't improve within a few days, it's essential to seek medical attention to prevent potential complications and ensure the best possible outcome in terms of morbidity, mortality, and quality of life.
From the FDA Drug Label
Adults and children 2 years of age and older: shake well before using. Cleanse the skin with soap and water and let it dry before each use. Apply lotion to the affected area using a cotton or soft cloth, as often as needed for comfort. Directions for itching of skin irritation, inflammation, and rashes: adults and children 2 years of age and older: apply to affected area not more than 3 to 4 times daily
The treatment for heat rash (prickly heat) may include:
- Applying calamine lotion to the affected area as often as needed for comfort 2
- Applying hydrocortisone to the affected area not more than 3 to 4 times daily 3 Key points:
- Cleanse the skin with soap and water and let it dry before each use
- Use a cotton or soft cloth to apply the lotion
- For children under 2 years of age, consult a doctor before use 2
- For children under 12 years of age, ask a doctor before using hydrocortisone 3