A member asked:

When i eat fish i get itchy scalp dry skin and thinning hair my doctor take prick test fish allergy but was negative i don't understand what is this?

3 doctors weighed in across 2 answers

Not all related: I can see itchy scalp as a possible allergy but eating fish cannot immediately cause you to have thinning hair and dry skin. This is related to a more chronic cause, did you get your thyroid checked? Did you see a dermatologist? You may have an unrelated skin condition.

Answered 8/29/2016

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May not be allergy: Allergic reactions generally occur immediately. Can get hives, angioedema, wheezing, runny nose, sneezing, nausea, vomitting, or diarrhea. Dry itchy skin is not a sign of an allergic reaction, but could be eczema flaring from ingestion of a triggering food.

Answered 7/4/2015

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