What should you know about heat rash and Sudocrem?

Heat rash develops when sweat and warmth are held near the skin. Sudocrem is a thick barrier cream, so applying a heavy layer over sweaty or occluded skin may not suit every heat rash. It can also make the skin harder to inspect. Irritation from the product or its ingredients is possible, particularly on sensitive or broken skin. A rash that looks like heat rash may instead be contact dermatitis, follicle inflammation or infection.

The body site changes the advice: face, skin folds, genital skin and broken areas deserve extra caution. Do not use a product merely because the rash is red or itchy.

First move to a cool place, wash away sweat gently and pat the skin dry. If you use Sudocrem, apply only a thin amount to intact skin and stop if burning, swelling or worsening occurs; follow the label and avoid eyes and mucous membranes. Ask a pharmacist about a lighter emollient or other option when dryness is the main issue. Do not combine several creams without advice.

Seek review if the rash worsens after application, spreads, persists despite cooling, or becomes painful, warm, swollen, crusted or oozy. Fever or pus needs prompt assessment. Urgent help is needed for facial swelling, breathing difficulty, faintness or widespread blistering.

Ask whether the rash is truly heat rash, whether a barrier cream fits the site, and what to use if the skin is broken or infected-looking. Bring the product packaging if a reaction is suspected.