First I got the flu, then I got a horrible itchy rash all over my body. The doctor said it was an allergic reaction to something and gave me antihistimines and a course of cortico-steroids. I now feel much better and the rash is slowly disappearing, however, I'm still on the medication (and I will be for a couple more days). Is it safe to run when taking cortico-steroids? Due to the flu then the rash, I haven't run for 10 days. I'd really like to get back out there and it's also ruining my training. I've got a 10mile race coming up in less than 2 weeks. Thanks for any help.