YES: You will need formal allergy testing, especially since the nature of this skin condition being recI suggest pediatric and/or allergic medical conditions.
Answered 3/18/2019
204 views
Maybe: The rash sounds like it was triggered from something she ate or something that affected her whole body rather than a local contact agent.The whelps would be expected to return for the 3-4 days the body uses to process the agent when an antihistamine wore off. If you know the new food/possible trigger you can just avoid it in the future. Formal allergy testing might reveal one or more such agents.
Answered 3/18/2019
204 views
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