@gowalking Mine developed within 3 weeks after getting Reclast. I had Immunotherapy with Reclast because i have a very rare bone disease. They also suspect i have osteoporosis so i go in today to be checked via bone density scan. My rashes started as blister rings around my rash then dried up, i noticed in the sun etc it makes it worse. I go in tomorrow to see my pcp for these odd rashes im getting. I developed another rash recently on the back of my leg. I had Reclast in Feb and that was the only thing new i had done so i dont think ill be getting it again! I did sleep alot after my first immunotherapy! and got very very sick from it