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

### input:
I have a small, circular rash that s formed on my upper back over the last week. I first noticed it about 4-5 days ago when there was no obvious sign of rash, just minor itchiness and a couple of bumps. Now there a distinct red circle of bumps about the circumference of a soda can, maybe a little smaller. Their appearance is a bit bubbly but does not contain puss from what I can tell. This rash hurts more than it itches. It doesn t itch hardly at all, and I d say the pain level is about a 1-2 (on a scale of 1-10). The rash has grown in size each day, but not significantly (maybe a 1/2 inch in diameter over the last 3 days). There is also a similar onset of bumps and tingling beginning to form just beneath my armpit. In the past couple of weeks I have done a lot of hiking outdoors and in secluded forest-like areas. I have not changed soaps or anything along those lines recently. After doing some simple research on the internet I m still rather clueless as to what this rash could be.

### output:

Hi, Welcome to Chat Doctor. I have gone through your query. Based on the description and sites of lesion, it is highly likely to be a fungal infection Tania corporal(Ring worm).  It is a common fungal infection, usually seen on areas of body where there is moisture like underarms, groin region, finger spaces. But it can present virtually anywhere on the body. As you have been experiencing less itching and more pain it could be due to a wild strain (as of have mentioned that you have gone hiking and secluded in forest areas).  Do not worry. Using topical preparations that contain antifungal(clotrimazole, micanazole or ketoconazole), a steroid (dexamethasone OT triamcinolone or clobetasol) and an antibiotic (Aureomycin or gentamicin) should help you. If you have severe pain using NSAIDs like Diclofenac or diclofenac along with serration peptide will help you. But please see a Dermatologist to rule out other possibilities for the lesions (as I did not see the lesion I can not be accurate with my diagnosis but probability of you having ring worm infection is high) and get treated accordingly. Wish you a speedy recovery. Take Care