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Why do I get tiny, itchy bumps on my neck, chest, and back sometimes when I shower?

I'm a 20 year old female and I've been having this happen for as long as I can remember. It happens almost every time I shower and it gets really annoying. As I'm drying off I notice there is almost always at least two tiny flea bite looking bumps either on my chest, neck, or back surrounded by redness. I know their not flea bites because I don't have them before I get into the shower and they fade away in about 15-20 minutes after I dry off if I ignore them, if I don't they just last a little longer.
I am not entirely sure what this is, as most reactions to showering tend to be more diffuse and not just limited to 1 or 2 spots. Luckily, if the symptoms are not persistent and are not occurring except with showering then they are unlikely to be a serious problem. I think the most likely thing is that that you are having a minimal contact reaction to something you use while showering, such as a brand of soap or shampoo. You could experiment with changing brands to see if this resolves the issue. Another possibility would be that these are hives. Hives, or urticaria, can occur in some people related to certain physical stimuli, such as scrubbing or hot water. As long as these do not generalize it is not a problem. A few hives could be treated with an antihistamine like diphenhydramine, which is available over the counter. You could also try limiting scrubbing and using less hot water. Regardless of what is going on, I do not think this is serious. If the symptoms worsen are become more persistent, you should talk to your primary care doctor to determine if you need a better treatment or workup for an underlying condition.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under Zocdoc’s Terms of Service.

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