I started taking prozac about 6 weeks ago. By the fifth day I started to have a small rash, but it eventually went away. I continued to take the prozac and on my sisth week i broke out into hives from head to toe. there is so much confusing information on the half life of prozac. some info says 5 days others say months. I have now been onsteroids for 2 weeks and am continuing to have major hives. When will this end?