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workouts bring hives on my lower back, legs, and butt

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I work out regularly and never experienced any problems. I take pre-workout supplements and protein after workout.
The past month I have been experiencing hives on my lower back, legs, and butt during and then after my workouts. The hives have been preceding to get worse throughout the month and I haven't been going to the gym as often. I thought it may have been a bad side effect from my pre-workout but I tried a few workouts without it and the hives still appeared.
The hives are small, red, elevated above the skin and are itchy. I have been taking Benadryl after my workouts and they disappear after about an hour. Otherwise, they remain itchy and do not go away for about 3-4 hours.

This has become a really bothering issue as I workout regularly. I spoke with my doctor about this and he has dismissed this issue and says it's nothing. I have been seeking a second opinion.

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replied February 11th, 2015
Skin Answer A51054
Hello and Welcome

I appreciate your concern

Based on your history of the rash/hives, there are mainly two possibilities i.e acute urticaria or contact dermatitis and Henosch scholene purpura. However a clinical evaluation by physically observing the hives/rash would be required to assess its nature before concluding such possibilities. As you mentioned that there was good response to the anti histamines so it could point towards an urticaria. The location of the rash is more fitting with HSP, though.Please consult a dermatologist in this regard

wishing you best of health


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