A member asked:

What does a stinging nettle rash look like?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Used to get this in: Scotland - owie ! the stinging nettle (urtica dioida) contains different chemicals depending on the subspecies, which can include: serotonin, histamine, formic acide, acetylcholine, moroidin ; leukotrienes. Small hair- like needles inject chemical into the skins which causes redness, swelling (welts) intense pain ; possibly itching. It may take minutes to days to resolve.

Answered 10/24/2013

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