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

### input:
I have an extremely itchy rash that started behind one knee, then my chest, then the other knee, and now there are a couple of bumps in the crease of my arm bend (behind elbow).  This was misdiagnosed last week as MRSA, but I went back to the doctor when the antibiotics didnt helped. The doctor has no idea what it is. He gave me anti-fungal ointment and corticosteroid cream, which helps with the extreme itching.  That was before it appeared in the crease of my elbow. This morning two bumps appeared there.  The rash starts out as little bumps and then also looks swollen and hive-like.

### output:

Hi, From the way you explain there may be so many etiologies for your problem, and the treatment is almost same except specific treatment. I suspect that you have Contact DermatitisContact dermatitis is a rash on the skin that can be itchy, painful, or tender. Sometimes it can cause blisters or swelling. Contact dermatitis is caused either by a substance that irritates the skin, or a substance that causes an allergy on the skin. Some substances that can cause contact dermatitis include soaps, perfumes, poison rubber products, cosmetics, jewelry, and medications. You usually can avoid further contact dermatitis by avoiding the substance that causes it, provided you are able to find the causes contact dermatitis is treated with corticosteroid skin creams or other skin creams or ointments. If the rash is severe, your doctor may suggest oral medications. Applying wet, cool compresses to the area or taking a cool bath can also help ease symptoms. Scratching the rash, rough clothing, and continued contact with the irritant or allergen can make the rash worse. Get the correct etiology (including diet) and treat accordingly. You will be alright. I wish you a speedy recovery Best wishes