I have also had back pains in the last 2 weeks. If this helps.
Hi.
Prednisolone can cause bruising, But if it carries on i would have it checked out , maybe have some bloods done and also check platelets.
Hopes this has helped
Nicola
this might be because of the lack of iron in your body right now. I have a naturally low iron count in my blood and sometimes the slightest thing in a sensitive area like that will leave a bruise, and they often last a while. however, I would definately still go to the doctor to get it checked.