What should I do if I get heat rash?
If a person develops prickly heat (miliaria), it can cause intense skin itching. There are several types of prickly heat—some appear as red bumps, while others manifest as white lesions—both of which may lead to severe pruritus. Infants and children are especially prone to developing prickly heat, though some adults may also be affected. So, what should one do when prickly heat occurs?
What to Do When Prickly Heat Appears
Management of prickly heat involves proper skin care, topical treatments, and, in some cases, oral medications. If prickly heat is present, meticulous skin care is essential. Avoid scratching the itchy areas, as this may damage the skin and allow bacterial invasion, potentially leading to infection. Wear loose-fitting clothing to minimize friction between skin and fabric. Avoid using soap for cleansing, as it may further irritate the skin. Topical application of calamine lotion helps relieve itching and alleviate symptoms. For patients with severe pruritus, oral antihistamines may be prescribed under a physician’s guidance to enhance anti-allergic and anti-pruritic effects.

Prickly heat can be classified into three main types: red miliaria (miliaria rubra), white miliaria (miliaria crystallina), and pustular miliaria (miliaria pustulosa). Red miliaria typically appears on the arms, neck, and axillae as itchy, erythematous papules. White miliaria presents as small, transparent vesicles that rupture easily and commonly occur on the limbs. Pustular miliaria manifests as pus-filled pustules and carries a higher risk of secondary infection. Prickly heat most frequently occurs during hot, humid summer months, when excessive sweating is common. If sweat is not promptly cleaned away, it may accumulate in skin folds, triggering the development of miliaria.

Patients are advised to regularly cleanse or gently wipe the skin with lukewarm water to maintain dryness, and to ensure adequate indoor ventilation. We hope this information proves helpful.