1 doctor weighed in:

Itchy legs 6yr ago&became red little spots all over, and are redder when sweat. Blood test is normal. Itchy again, but rash is big like coin. Related?

1 doctor weighed in
Dr. Yun Tran
Family Medicine

In brief: See a doctor

they sound like hives/urticaria.
unfortunately sometimes we can't find a cause. possibly your body reacts to heat/moisture as if it is allergic. I would see a doctor again, but meanwhile, try diphenhydramine/benadryl for the itch and rash. taking a pill like zyrtec/allegra/claritin daily could also help.

In brief: See a doctor

they sound like hives/urticaria.
unfortunately sometimes we can't find a cause. possibly your body reacts to heat/moisture as if it is allergic. I would see a doctor again, but meanwhile, try diphenhydramine/benadryl for the itch and rash. taking a pill like zyrtec/allegra/claritin daily could also help.
Dr. Yun Tran
Dr. Yun Tran
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