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. Otto Placik
Surgery - Plastics
In brief: Allergy vs rash
This could be contact dermatitis to one of the ingredients in the sunscreen as well.
Topical Benadryl (diphenhydramine) and 1% Hydrocortisone screen may also be beneficial to alleviate symptoms. Heat rash is also a possibility and will likely be short lived and limited to the sunexposed areas only.

In brief: Allergy vs rash
This could be contact dermatitis to one of the ingredients in the sunscreen as well.
Topical Benadryl (diphenhydramine) and 1% Hydrocortisone screen may also be beneficial to alleviate symptoms. Heat rash is also a possibility and will likely be short lived and limited to the sunexposed areas only.
Dr. Otto Placik
Dr. Otto Placik
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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