Citalopram
"Started taking Celexa on August 14th. Within 2 days I broke out in hives on my collar bone then within a week I had severe hives on my arms and spreading. Within a couple of days I had hives on my legs and back. Dr. didn't think it was the Celexa so continued it and ended up in the emergency room with worse side effects vomiting!  Emergency room declared I had a severe allergic reaction to Celexa. "