What causes small spots to appear on the hands?

Small bumps on the hands are usually caused by conditions such as keratosis pilaris, seasonal changes, dyshidrotic eczema, eczema, or tinea manuum. If discomfort occurs, it is recommended to seek medical attention promptly. Detailed explanations are as follows:

1. Keratosis Pilaris

Small bumps on the hands may be related to keratosis pilaris, a common physiological condition characterized by tiny, rough bumps on the skin surface, particularly noticeable on the hands and feet. Keeping the hands clean and dry, along with regular use of a gentle scrub for exfoliation, can help maintain clear sweat pores.

2. Seasonal Changes

As seasons change, especially from winter to spring, small bumps may appear on the hands due to fluctuations in temperature and humidity. Maintaining hand moisture by using moisturizers or hand creams—especially immediately after handwashing—is recommended.

3. Dyshidrotic Eczema

Dyshidrotic eczema results from blocked sweat ducts and commonly appears on the hands as small, blister-like bumps accompanied by itching. Treatment may include medications such as desonide cream, mometasone furoate cream, or prednisone tablets, used as directed by a physician.

4. Eczema

Eczema may develop due to prolonged exposure to dry environments, leading to impaired skin barrier function and moisture loss, which can result in small bumps and symptoms such as dry skin. Treatment under medical guidance may involve calamine lotion, zinc oxide ointment, or loratadine tablets.

5. Tinea Manuum (Hand Fungus)

Tinea manuum is caused by fungal infection, which disrupts the normal skin structure and triggers inflammatory responses, resulting in red bumps often accompanied by blisters and scaling. Treatments may include terbinafine cream, ketoconazole cream, or itraconazole capsules, used as advised by a doctor.

In daily life, maintaining clean and dry hands, choosing skincare products containing moisturizing ingredients such as glycerin and hyaluronic acid, and regular exfoliation can help keep sweat pores clear.