· In some cases, red spots may result from poor hygiene or a minor irritation. If they’re more serious, such as a sexually transmitted infection, they’re typically accompanied by other symptoms. · Balanitis is one of the most common, and is a natural infection under the foreskin, which is the most common reason for a red penis. It can affect males of all ages, but is most common among uncircumcised adult men. · Non-infectious causes of spots on the penis, like psoriasis or eczema, can often be treated with topical corticosteroids. Infectious conditions that cause bumps on the penis, like HPV or genital herpes, are often sexually transmitted and need treatment. · As the body reacts to the infestation, patients develop red papules and nodules, often accompanied by local redness and swelling. These burrows and lesions are commonly found on the glans penis, scrotum, and shaft. Itching, notably exacerbated at night or after hot baths, is the primary symptom. [1] . Common skin disorders of the penis. · Why Do I Have a Rash on My Penis? You might have had rashes on your arms or legs, or even your face. But on your penis? It can happen, and many things can cause it. A rash can show up as red,...