DD gets hives from Advil.

I developed an allergy to Tylenol in my teens. Never officially tested though.

One can have idiopathic hives or eczema. It’s not always triggered by allergy. Environmental and contact allergies sometimes manifest in dermatological symptoms too.

Wishing you well as you figure it out!

Been allergy tested for foods and nothing shows up and wondering if anyone else has had allergies to either of these medicines? Rash, itch, etc...