Severe sulfa allergic reaction. taking benedryl and prednisone. not getting any better. broke out in blisters all over body, red skin with pain stings?

Go to the er: There can be a very severe reaction that is a skin emergency. The most significant variant is called toxic epidermal necrolysis (ten). Another slightly less severe condition but on the same continuum is stevens-johnson syndrome. It is important with your current symptoms you get evaluated asap. The most common cause of both of these is drug reactions.