### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
hi, the past few weeks i have been waking up to stiff and soar joints and muscles. The pain is gradually increasing. I have to stretch a few minutes before getting out of bed. Its very painful. It is happening on my left shoulder, that connects the arm, and my knees where the joints are, including muscle pain in that area as well. My joints make popping noises when I try and bend them. I also have another separate problem. I have a rash on my butt area, that looks like a cut, that appears out of no where, and sometimes theres a few of these rash looking cuts that come at the same time. They are itchy and, painful and they leave scars, they continue to reappear. I was recently blood tested for herpes and STDs and they were all negative. I did however go to a doctor when this rash appeared and he took a sample of it off my skin and he said that it was tested and came back as a result of a staph infection. I was prescribed an antibiotic called bacterium but they continue t0 come back so its clearly not working, and the only location it seems to turn up is on my butt cheeks, im sick of these random rashes that turn in to cut looking wounds, can u please help me figure this out. thank u so much.

### output:

Concerning the joint pain I need a history pleased to help you.how old are you? Activity level?have you been with history of tonsillitis or autoimmune disorder ?do you feel the joint pain after exertion or just in mornings? .stubborn skin staph Infection may need oral or iv antibiotics me of the antibiotics that have been used to treat staph infections are cephalic, cefuroxime, cephalexin, bacilli (Fallen), oxacillin (Bacterial), dicloxacillin, vancomycin, clindamycin (Clean), vitamin, and telavancin (Victim). Combinations of antibiotics and other antibiotics can also be used.