What causes many small bumps to appear on the inner side of the arm?

Generally, the appearance of many small bumps on the inner side of the arms may be caused by factors such as excessive stress, food allergies, eczema, contact dermatitis, or keratosis pilaris. It is recommended to seek timely medical attention, identify the underlying cause, and undergo symptomatic treatment under a doctor's guidance. Detailed explanations are as follows:

1. Excessive Stress

Although stress is not a direct cause of small bumps on the inner arms, long-term mental stress may exacerbate skin problems, leading to bumps in this area. It is advisable to learn effective stress and emotion management techniques, such as practicing deep breathing, yoga, or meditation, maintaining sufficient sleep, and following a regular作息, all of which can help improve skin conditions.

2. Food Allergy

If you experience food allergies or food intolerance, allergic reactions may occur, causing the aforementioned symptoms along with itching, redness, and swelling. It is important to keep a record of your diet and avoid foods that trigger allergic reactions. Increasing your intake of foods rich in vitamins and antioxidants, such as fresh fruits, vegetables, and whole grains, can promote skin health.

3. Eczema

Eczema is somewhat related to microbial infections. When these microbes infect the skin, the toxins and enzymes they produce can cause localized inflammatory reactions, resulting in symptoms such as redness, pain, and small bumps on the inner side of the arms. Under a doctor's guidance, medications such as hydrocortisone cream, compound dexamethasone cream, or triamcinolone acetonide and chloramphenicol solution may be used for treatment.

4. Contact Dermatitis

Contact dermatitis may occur when the skin comes into direct contact with certain irritants, such as detergents, cosmetics, or clothing materials, which can lead to small bumps on the inner arms. Patients may use calamine lotion, mupirocin ointment, or compound dexamethasone cream according to medical advice.

5. Keratosis Pilaris

This is a common skin condition characterized by keratinization around hair follicles, forming small granular bumps. It is recommended to maintain skin cleanliness and avoid excessive friction or squeezing. Using products containing mild exfoliating ingredients can help remove dead skin cells. If necessary, topical medications such as isotretinoin gel, urea and vitamin E cream, or tretinoin cream may be used under medical supervision, or laser therapy may be considered.

In daily life, it is important to develop good habits and avoid consuming spicy and irritating foods such as pepper, chili peppers, and garlic, as they may hinder recovery.