All medicines come with side effects, some good, some bad. The corticosteroid prednisone is no exception. Prednisone has life-saving anti-inflammatory properties. But this miraculous drug is also known to have sinister side effects.
Most doctors will warn patients about weight gain, body hair growth, insomnia, acne, nausea, headache and redistribution of fat to various parts of the body. (Typically, these side effects are minor but increase with longer-term use. See Need to Know: Corticosteroids.) Corticosteroids can ever affect your bone density.