Why does a man experience itching in the genital area?

Itching in the genital area is a very common symptom. Because the external genitalia are highly sensitive, numerous pathological conditions and external irritants can trigger itching—causing significant discomfort, sleep disturbances, and difficulty sitting or lying still. So, what causes genital itching in men? Below, we address this question.

What Causes Genital Itching in Men?

1. Scrotal Eczema

Allergic reactions are a major contributing factor to this condition and are closely related to individual constitution. Men with allergic tendencies are at higher risk of developing scrotal eczema if they wear unsuitable underwear or consume common allergens such as shellfish, crab, or peanuts. Additionally, scrotal pruritus may arise from natural sebaceous gland secretions in the scrotum. Excessive sweating combined with wearing tight, non-breathable undergarments creates a warm, moist local environment conducive to itching. Sexual contact with a woman suffering from candidal vaginitis may also trigger scrotal pruritus.

2. Tinea Cruris (Jock Itch)

This fungal infection is relatively common among young men. Symptoms typically include itching on the inner upper thighs, groin area, and inguinal region. Initially, small red papules appear, which gradually coalesce into scaly, well-demarcated plaques with slightly raised borders. Pubic lice infestation is another possible cause—transmitted either during sexual intercourse from an infected partner or via contact with unclean bedding. Primary symptoms include intense itching in the pubic hair and perianal regions; careful inspection may reveal brownish lice clinging to hair shafts.

3. Candidiasis (Yeast Infection)

The hallmark symptoms include red papules and white flaking on the penis—a manifestation of fungal infection. Three groups of men are particularly susceptible: (1) those whose sexual partners have candidiasis—healthy men can become infected through sexual contact; (2) individuals with diabetes—elevated blood glucose levels and compromised immunity create favorable conditions for fungal growth; and (3) patients with chronic illnesses who frequently use corticosteroids or immunosuppressive agents—these medications weaken immune defenses, increasing vulnerability to fungal infections.

The above outlines the most common causes of genital itching in men. We hope this information is helpful to you.