What causes small blisters on a child's hands?
Sep 07, 2024
Source: Cainiu Health
Dr. Zhou Xiaofeng
Introduction
In general, small blisters on a child's hands may be caused by thermal injury, friction or pressure, seasonal changes, dyshidrotic eczema, tinea manuum (fungal infection), or other factors. It is recommended to seek medical attention promptly and receive symptomatic treatment under a doctor's guidance. Keep the child's hands clean and dry, avoid contact with irritants, and regularly change bed linens and clothing.
In general, small blisters on a child's hands may be caused by thermal injury, friction or pressure, seasonal changes, dyshidrotic eczema (pompholyx), tinea manuum (fungal infection of the hands), and other factors. It is recommended to seek medical attention promptly and receive symptomatic treatment under a doctor's guidance. Specific causes are analyzed as follows:
1. Thermal Injury
During hot summer months, when children engage in outdoor activities, contact with high-temperature objects or prolonged sun exposure may lead to small blisters on the skin. The affected area should be cooled immediately by rinsing with running cool water. Avoid direct application of ice packs.
2. Friction or Pressure
During play, repeated friction against rough surfaces or prolonged pressure on the hands may also cause small blisters. Minimize exposure to friction sources, keep the affected area clean and dry, and avoid rupturing the blisters.
3. Seasonal Changes
Fluctuations in temperature and humidity during seasonal transitions may trigger skin sensitivity in children, resulting in small blisters and other reactions. Pay attention to weather forecasts and adjust children’s clothing appropriately according to seasonal changes.
4. Dyshidrotic Eczema (Pompholyx)
Dyshidrotic eczema commonly occurs in late spring and early summer, triggered by hot weather, poor sweat drainage from the hands, or allergic reactions. It causes clusters of small subcutaneous blisters on the palms or sides of fingers, often accompanied by intense itching and peeling. Under medical supervision, medications such as cetirizine hydrochloride tablets, desonide cream, and calamine lotion may be used for treatment.
5. Tinea Manuum (Hand Fungus)
Tinea manuum is caused by fungal infection, typically affecting one hand, and may spread from athlete’s foot (tinea pedis). After infection, fungi multiply on keratinocytes in the epidermis, leading to small blisters on the hands, often associated with itching and scaling. Under a doctor's guidance, antifungal medications such as ketoconazole cream, itraconazole capsules, and bifonazole cream may be prescribed for treatment.
In daily life, maintain clean and dry hands for children, avoid contact with irritants, and regularly change bed linens and clothing.
