Heat Rash

What causes heat rash?

Heat rash happens when sweat glands become blocked, trapping sweat under the skin. This often occurs in hot, humid conditions, especially when wearing tight or non-breathable clothing. Babies, people who sweat excessively, and those who engage in physical activity in warm weather are more prone to it. The rash typically appears as small, red, itchy bumps and can sometimes cause a prickly or burning sensation.

How can I treat heat rash at home?

To relieve heat rash, start by cooling your skin. Stay in an air-conditioned space, take a cool shower, or apply a damp cloth to the affected area. Wear loose, breathable clothing and use a lightweight, fragrance-free moisturiser to avoid further irritation. Products with soothing ingredients like calamine or aloe vera can help. If itching persists, an antihistamine cream or tablet may provide relief. Avoid scratching, as this can lead to infection.

Can heat rash go away on its own?

Yes, heat rash often clears up within a few days once the skin is kept cool and dry. Making small changes, such as wearing cotton clothing and staying hydrated, helps speed up healing. If the rash lasts longer than a week, becomes painful, or shows signs of infection (like swelling, pus, or a fever), it’s best to see a doctor.

What products help with heat rash?

Look for gentle skincare products designed to soothe irritation. Calamine lotion, aloe vera gel, and hydrocortisone cream can reduce itching and redness. Powders containing zinc oxide help absorb moisture and keep the skin dry. Avoid oily creams, as they can trap heat and worsen the condition. If you're unsure, a pharmacist can recommend the best option based on your symptoms.

Is heat rash contagious?

No, heat rash isn’t contagious. It’s a skin reaction caused by sweat buildup, not an infection. However, if the skin becomes irritated and bacteria enter through broken areas, an infection could develop. Keeping the skin clean and avoiding excessive scratching lowers this risk.