What causes red bumps in the armpit and groin area, and what should be done about it?

Red bumps in the armpits or groin area may result from local friction, sweat irritation, eczema, folliculitis, or contact dermatitis. Symptoms can be improved by reducing irritation, keeping the area dry, and using appropriate medical treatments. If the number of bumps increases, itching worsens, or ulceration occurs, prompt medical attention is necessary.

1. Local friction: Tight clothing or frequent movement can cause repeated skin friction in areas such as the armpits and groin, leading to red bumps accompanied by mild itching or a burning sensation. It is recommended to wear loose, breathable cotton clothing and avoid strenuous physical activity to reduce local friction.

2. Sweat irritation: Excessive sweating during summer or after exercise can keep the skin moist for prolonged periods, blocking sweat ducts and causing small red bumps, possibly with itching. It is advisable to clean the skin promptly, keep the area dry, and change into dry clothes after sweating.

3. Eczema: Inflammation triggered by local moisture, allergies, or other factors manifests as red patches or丘疹-like bumps, often accompanied by intense itching, which may worsen with scratching. Patients may use medications such as desonide cream, loratadine tablets, or calamine lotion under medical guidance to relieve discomfort.

4. Folliculitis: Bacterial infection of hair follicles causes inflammation, presenting as red bumps centered around hair follicles, sometimes with pus at the tip, and accompanied by mild pain or itching. It is recommended to use medications such as mupirocin ointment, cefuroxime axetil tablets, or iodophor under a doctor’s supervision to alleviate symptoms.

5. Contact dermatitis: Exposure to irritants such as synthetic fabrics or personal care products triggers localized skin inflammation, resulting in red bumps accompanied by itching and a burning sensation. Under medical advice, patients may use hydrocortisone cream, cetirizine tablets, or compound Phellodendron liquid topical agent to relieve symptoms.

Maintain cleanliness and dryness of the armpits and groin area. Wear loose, breathable cotton clothing, avoid scratching or rubbing affected areas, follow a light diet avoiding spicy and irritating foods, drink plenty of water, and use moisturizers appropriately to support the skin barrier.