I went to er for bad rash on upper arms and under arm. They prescribed me prednisone for twenty days. I went back two days later for abcess tooth they gave me penicillin and my rash is now spread on back of legs front of thieghs and neck and my bottom lip. I stopped penicillin and prednisone but started prednisone like directed
Hi, Thanks for writing in.  The condition you are suffering from can be Chat Doctor.  Penicillin can give rise to rash as described by you. Proper examination KOH scraping, patch testing, skin biopsy may be required for diagnosis. Prednisolone is a steroid and long term intake is not advisable.  Consider visiting your GP or dermatologist for proper diagnosis and treatment. You can take tab. Zyrtec for itching till you visit a doctor. Also, you can apply soothing Calamine lotion over the affected area. Hope this helps. Regards MD Dermatology.