Hi, thanks for usin g healthcare magic,
There is always a possibility of
allergy to any medication. If you noted the rash soon after starting the
viagra and have no previous history of any skin problems, then it is likely that the rash is related to the use of the medication.
It would be better to discontinue it. There are other medications in that family of drugs that you can use with hopefully no problems. These include
cialis and
levitra.
I hope this helps