2 doctors weighed in:
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

Dr. Lavinia Chong
Surgery - Plastics
In brief: 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.

In brief: 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.
Dr. Lavinia Chong
Dr. Lavinia Chong
Thank
Dr. Robert Alexander
Surgery - Plastics
In brief: 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.

In brief: 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.
Dr. Robert Alexander
Dr. Robert Alexander
Thank
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