Some people are allergic to sulfonamides.
You could try strong antihistamines to see if it helps.
If you exposed yourself to UV radiation in a tanning bed or outside it could also do this, as this drug is photosensitive.
Benadryl would be the first to try. Or you could get Atarax from a doctor. Both of these are strong enough for skin reactions.
Drink alot of fluids to help your body get rid of this drug. Since it is long acting it still might be around some. Extra water also protects your kidneys...which sometimes flare up with Sulfa drugs.
__________________
All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
************************************
.
Weezie looking at petunias 8.25.2017
****************************
These forums are for mutual support and information sharing only. The forums are not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider. Always consult your doctor before trying anything you read here.