A member asked:

Are hives a common side effect of opioids due to histamine release?

3 doctors weighed in across 2 answers
Dr. John Chiu answered

No: Although opiates may worsen the hives, they more likely cause gastrointestinal symptoms and rarely if ever hives.

Answered 4/1/2016

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Dr. Robert Hartman answered

Specializes in Dermatology

No: Opioids cause the mast cell to degranulate. The itch of opioids is a direct effect on releasing histamine from the mast cell. Hives are an allergic reaction from many causes.

Answered 9/7/2013

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Related Questions

A member asked:

Which histamine rich foods should people with chronic hives avoid?

A doctor has provided 1 answer