I developed whole-body hives from an injection of 1 cc of Kenalog...

I developed whole-body hives from an injection of 1 cc of Kenalog for tennis elbow. Subsequent allergy testing was "incredible" according to my allergist. We both think that I developed a strong allergy to Kenalog from more than 20 years of using it periodically for scalp eczema. Apparently, allergy to Kenalog is quite rare (according to my allergist). He's thinking about writing about it. So, altho' I had a severe allergic reaction to it, it appears to be quite rare.