What causes itching and foul odor in the scrotum and inner thighs, and what should be done about it?
Dec 01, 2025
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
In general, itching and foul odor in the scrotum and inner thighs may be caused by poor local hygiene, non-breathable clothing leading to sweat accumulation, intertrigo, tinea cruris (jock itch), or scrotal eczema. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition through general measures and medication under a doctor's guidance. In daily life, maintain a light diet, reduce intake of spicy and irritating foods, and consume more fresh fruits and vegetables.
Generally, itching and foul odor in the scrotum and inner thighs may be caused by poor local hygiene, non-breathable clothing leading to sweat accumulation, intertrigo, tinea cruris (jock itch), or scrotal eczema. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve symptoms under a doctor's guidance through general measures, medication, and other treatments. A detailed analysis is as follows:
1. Poor local hygiene: Residual sweat, sebum, and urine that are not cleaned promptly can be broken down by bacteria, producing foul odor and irritating the skin to cause itching. Wash the affected area daily with warm water, gently pat dry with a clean towel afterward (avoid rubbing), change underwear every day, and use fragrance-free cleansing products.
2. Non-breathable clothing causing sweat buildup: Wearing synthetic or tight-fitting clothes for extended periods reduces ventilation and leads to sweat accumulation, promoting bacterial growth and discomfort. Immediately switch to loose, breathable cotton clothing, avoid wearing tight jeans, and change out of wet clothes promptly after exercise to keep the area dry.
3. Intertrigo: Frequent friction and moisture in skin folds lead to superficial inflammation, resulting in redness and itching; secondary infection may cause odor. Follow your doctor’s instructions to apply medications such as zinc oxide ointment, tannic acid ointment, or calamine lotion. Avoid prolonged sitting and get up periodically to allow air exposure to the area.
4. Tinea cruris (jock itch): Fungal infection affecting the groin and scrotal skin causes ring-shaped red rashes with flaking and itching; fungal metabolism produces an unpleasant smell. Under medical guidance, use antifungal medications such as bifonazole cream, terbinafine cream, or itraconazole capsules. Avoid sharing towels or clothing with others to prevent transmission.
5. Scrotal eczema: Inflammation triggered by allergies or local irritation leads to papules and weeping lesions; secondary infection worsens both itching and odor. Patients should follow medical advice to take loratadine tablets, use desonide cream, or tacrolimus ointment. Avoid scratching the affected area to prevent skin damage and infection.
In daily life, maintain a light diet, reduce intake of spicy and irritating foods, and consume more fresh fruits and vegetables. Avoid washing the affected area with hot water and choose gentle moisturizing products. With proper treatment and careful care, itching and odor can be alleviated, supporting healthy skin in the affected region.
