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Independence, MO
A 20-year-old female asked:

Itchy skin turns into fast spreading rash like bumps when scratched. both arms and right leg. do have allergies & asthma. not on meds for allergies.

2 doctor answers3 doctors weighed in
Dr. Susan Arnoult
Family Medicine 26 years experience
Eczema: Usually an itch that turns to rash when scratched is eczema or atopic dermatitis. This is associated with allergies. Maybe start taking your allergy medications again.
Dr. Joshua Davidson
Allergy and Immunology 19 years experience
Happy to help.: There are a couple of possibilities. First, dermatographism is a condition where scratching or marking the skin causes hives. Second, hives can arise without scratching as well. Antihistamines like Zyrtec/Allegra can help. If this persists, I'd recommend seeing an allergist who can allergy test you and help determine if other conditions are present.
Last updated May 8, 2021

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