A member asked:

Had itchy bumps for a week now after going biking w/ sunscreen. seem to be clear/flesh colored until i scratch them and they turn red. is it heat rash?

2 doctors weighed in across 2 answers
Dr. Robert Alexander answered

Specializes in Plastic Surgery

Maybe: It is possible, depending on location of the bumps/rash. Areas under clothing or heavy perspiration are potential sites for such rashes. If on outside skin areas where sunscreen was applied, may be assoicated with contact allergy to the sun lotion or its preservatives contained. Do not scratch them. You may try use of 1% hydrocortizone cream (cortaid) applied 2-3 times a day... No scratching.

Answered 7/5/2012

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Contact dermatitis: Itchy, raised bumps, after exposure to a novel sunscreen is probably contact dermatitis, a form of allergy. Scratching releases histamine and if excessive can result in bacterial superinfection. Treat your skin gently, with soap and water, avoid the offending sunscreen, as a 2nd exposure may result in exaggerated response.

Answered 8/7/2013

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