Skin testing flaring back up 2 weeks later

[Guest guest]

The strangest thing happened and I wondered if anyone had any ideas. So I had

skin prick testing done at an allergist's. I knew I was allergic already, having

had positive tests before and symptoms, but was wondering if the tests would

show a more severe response.

I found out later that, according to research by Mayo, Trazodone and like meds

have antihistomine-like properties and will often give false negatives. The

clinic I went to did not know about this research. So to my surprise, the

testing showed nothing--that is, until a day later. Then molds, foods, and dog

showed up, with molds being the largest and itchiest bumps. So either delayed

response or affected by meds or both.

Anyway, that was 2-3 weeks ago. The spots had faded after 5 days. Then

yesterday, I had this horrible bout of gastroenteritis with weird (for me)

symptoms and guess what? The bumps reappear. They were gone and then they came

back and were irritated/inflamed. And then today, after the worst of the gastro

faded, they faded again, as if never there.

Isn't that strange? Any guesses what that's about?