A 33-year-old member asked:
i keep getting these randome hives that comes, itch like crazy and then go away. what could it be?
1 doctor answer
Dr. Steven Machtinger answered
43 years experience Allergy and Immunology
Quick overview: Acute hives lasting <6 weeks: food or drug allergy, viral or streptococcal infections. Chronic hives >6 weeks: common: idiopathic & autoimmune; rare: parasites, malignancy, mastocytosis, food allergy. Physical urticaria: due to increased mast cell fragility: dermatographism (literally skin writing), pressure, delayed pressure, vibration, cold, hot, sunlight. If answer not obvious see an allergist.
Answered on Mar 26, 2013
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