I had a cortisone shot in my shoulder last Tuesday, and on Thursday I came down with a severe rash on my thighs down to my toes. Also had my eyes dialated at the eye doctors on Thursday with 'Paremyd'. The rash itches like crazy. Not sure if the rash is from the injection or the eye drops. Went to the doctor on Friday and she suggested Benydril, I have been taking it but it is worse.