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

### input:
hey doc. im hoping you can answer this mystery that has been bothering for some time regarding my skin..Im a 22 year african american southern california native with what i would say is an average complexion for a black dude and ever since i was maybe 12 or 13, about the time i entered adolescence, i have started to notice these darkened skin blotches began to appear all over my chest, back, and shoulders. Its has the appearance of a rash, but it does not itch, its more or less dry skin patches that continue to spread as i grow older and they connect with other patches to create a larger patch. It seems to cover the area that would not be visible if i were to wear a t-shirt, which is confusing because its not like i can say its cause from sun damage. I have always routinely moisturize with lotion and even more recently i have use coco butter and Aloe Vera gel on a daily basis but that seems to not make any difference, and once again it only appears around my torso area and not anywhere else.  Because i have never really had consistent insurance coverage to request a check-up and gain any real knowledge of my condition. I need to know if you can provide and guidance or knowledge of what i may have and what my next move would be.

### output:

Hi, thanks for your query. After going through the information you have provided it seems that you have Tina tricolor in which there is a non-itchy scaly rash chest, upper arms, shoulders, back.  It is a fungal infection and is seen in adolescent age group. Treatment includes:Oral antifungal tablets and local antifungal creams. Treatment usually eliminates the fungal infection. However, the discoloration of the skin may take up to several months to resolve. Avoid applying moisturizers ad wear loose cotton clothing. You may contact a dermatologist for exact diagnosis and treatment. Hope this helps you.