hello, have been on prednisone for about 7 weeks, 30 mg a day, du...

hello, have been on prednisone for about 7 weeks, 30 mg a day, due to a weird rash on my leg following a very bad burn....started on leg, moved to face (badly), splotchy, itchy and crusty. Leg still isn't healed due to scratching etc, face problem stays away as long as I don't alter my intake. Getting all the usual side effects, swelling face, terrible aches in joints, sleeplessness, bad indigestion, thing is I've been to several doctors, had blood tests done for lupus,/swab/skin tissue taken from burn area, nobody knows what I may have. Please, if anyone knows anything about this condition, write here. Thank you