Men with red spots in the genital area may be diseases such as glansitis, circumcision, eczema, fungal infections and so on. 1. glansitis: patients mainly in the foreskin area of redness, swelling, burning pain and other symptoms, but also see the skin has a small red rash, erythema, etc., in severe cases may occur erosion and ulceration and so on. 2. Circumcision: If the patient has circumcision, it may also form small localized red rash and erythema on the surface of the foreskin, which may be accompanied by tingling, itching and other symptoms. 3. Eczema: commonly found in the scrotum area with small pimples or small blisters, itching, redness and other sensations, generally related to the body’s immune system, moisture in the pubic area, infection and other factors. 4. Fungal infection: If the patient develops fungal infection, especially the common Candida albicans infection, it may also form red rash and erythema in the genital area. Scaly, erythematous rash is visible when the scrotum is involved, and the prickling itch is more obvious. Patients are advised to visit the hospital in time for standardized treatment when the above symptoms occur.