Hello. It's nearly impossible to identify a dermatological disorder without an examination, so you'll have to see your doctor about this issue. However, one possible diagnosis that comes to mind is psoriasis
, which sometimes involves only the head of the penis. Unlike in other areas of the body, where psoriasis is manifested by thickening and silvery-white scaling, psoriasis of the glans penis
can appear as a flat, pink to red patch. In some individuals, penile psoriasis causes itching, burning or pain, but in many men it's asymptomatic.
To a large extent, penile psoriasis is treated like psoriasis elsewhere on the body, but special precautions must be taken to avoid thinning or irritation of the fragile skin on the glans. A brief trial (no more than two weeks) of over-the-counter hydrocortisone cream
would be worthwhile to see if it invokes a response, but you should really see a dermatologist
to confirm your diagnosis and outline a long-range plan; psoriasis is a chronic condition.
I hope you have some answers soon!