Doctor can examine: Blotchy appearing reddish rashes can occur when the blood flow in the tiny vessels at the skin's surface change, such as in an allergic rash or a viral rash. Viral infections that cause cold symptoms and other symptoms can sometimes cause such skin rashes. Hives are a rash of itchy bumps that look like many mosquito bites. Hives are a type of allergic reaction. A doctor can evaluate if needed.
Answered 3/12/2020
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