an allergic reaction would typically itch and have hives but not always. i have no way of really knowing if you had a cefzil allergic reaction or not but you can have a skin test to be sure. a person with 5th disease (erythema infectiosum) can have occasional "relapses" of the lacy rash on the lower arms and thighs as well as the characteristic "slapped face" appearance for weeks after the initial disease.
can you get fifth disease twice within a three week period? . i had something three weeks ago that the doctor said was an allergic reaction to cefzil antibiotics but then my two children got fifth disease and i had to take them to the doctor. but then today another lacey like rash has came up on my face. i'm not on any new medication now so i am wondering if you can get fifth disease again within a three week period or if it's possible i did have an allergic reaction three weeks ago and now i have fifth disease.