Hives: If hives have been occurring for more than 6 weeks, the cause may be: chronic autoimmune, physical or unknown (idiopathic). If hives occur for <6 weeks, hives may be related to medication, insect sting or bite or contact hives from another substance. Hives specifically on the arm in one spot is curious. Take photo and show your doctor.
Answered 10/19/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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