Reclast and rash

I had a Reclast infusion in August 2024. Within a couple of hours, a rash started on my face. It spread over the full left side of my face and neck and was extremely itchy. I thought I had poison ivy although I had not been anywhere where it was likely I could have contacted it. It was the weekend and I went to the Minute Clinic and was diagnosed with shingles, even though I have had all possible shingles shots, three in total. I started on the prescription that you can take if you’re diagnosed with shingles within the first 72 hours. Within two days the rash had spread to the other side of my face and down my neck to my shoulders. I went back to the Minute Clinic and they said it was not shingles but was probably poison ivy and put me on prednisone. The rash continued to spread to my stomach, arms and legs. Not contiguous, but in spotty patches. I next went to my dermatologist who put me on a higher dose of prednisone, and gave me two different creams, one for my body one for my face. These treatments finally helped the symptoms. The dermatologist also took a biopsy of the rash and sent it out, and it was determined to be drug related. During all this time i was in phone contact with the endocrinologist who had prescribed the Reclast infusion. They were interested in the progress, but really had no help to offer. Needless to say, I will not be having another Reclast infusion. This is the first adverse reaction I have ever had to any drug or food.