<s>[INST] Hey, I noticed today that my penis looked somewhat jaundiced...even my scrotum and there is a circular red patch of skin over much of my scrotum. The skin seems itchy, shiny, and and swollen a bit. Almost like it has less feeling..  What could this be? [/INST] Hello share your concern. Looking at your description it seems to be Infection or inflammation of the scrotum. If you are sexually active and recently exposed to the unprotected sex than there is a possibility of STD (sexually transmitted diseases)In my opinion you should see a dermatologist for physical examination and further course of action.Meanwhile, clean your private area with antiseptic soap or solution and apply antifungal like clotrimazole and antibacterial ointment. You can take antiallergic Chat Doctor. Hope this answers your question. Best wishes </s>