Can steroid use cause a skin rash after use stopped 5 days ago?

My son had a bad asthma attack and was put on prednisone. He finished his course of meds 5 days ago then 3 days later he has a skin rash form his head to his belly button. He has an appointment tomorrow at doc's, but has anyone else heard of prednisone causing a rash after use?|||Prednisone should not cause a rash, however it does keep an episode of the hives at bay, when you stop taking the meds, the hives will reappear. He needs to take antihistamines with the prednisone to fight the allergic reaction that he is obviously having that triggered his asthma attack. Good luck at the docs. Also calamine lotion will help give him some comfort until tomorrow.|||depends on how long he took the pred. But it isn't unknown.|||I had very reddened itchy skin on arms, shoulder, stomache while taking it on the third and fourth day, not day 1,2 or 5..not sure why. I put lotion on after the bath and it helped. I took it for asthma too.