What causes yellow fluid blisters on the hands?

The causes of yellow fluid blisters on the hands can be varied, mainly including the following: 1. **Fungal infection**: If the skin on the hands is invaded by fungi, it may lead to tinea manuum (hand fungus), causing yellow fluid blisters accompanied by symptoms such as itching. This condition requires treatment with antifungal medications, such as clotrimazole cream or ketoconazole cream. 2. **Dyshidrotic eczema (sweat blister)**: Dyshidrotic eczema is a common skin condition associated with skin allergies, fungal infections, viral infections, or mental factors. When blisters appear on the hands due to dyshidrotic eczema, they may present as yellow fluid-filled blisters. Treatment may include washing with calamine lotion and applying antiviral ointments, such as acyclovir cream. 3. **Exposure to chemicals**: Prolonged or frequent contact with chemical substances, such as detergents or chemical reagents, may irritate the skin on the hands and lead to the formation of yellow fluid blisters. In such cases, timely wound cleaning should be performed, and further contact with these substances should be avoided. 4. **Physical injury**: Physical factors such as burns or friction may also damage the skin on the hands, resulting in yellow fluid blisters. For burns, medications such as moist burn ointment can be applied for treatment.