What illness causes small pus-filled bumps on the hands?

Small pus-filled bumps on the hands may be associated with several different conditions, primarily including the following: 1. **Tinea manuum (hand fungus):** Caused by a fungal infection, commonly seen in individuals with excessive hand sweating or weakened immune systems. Hand fungus can cause symptoms such as peeling, blisters, and dryness of the hands, and small pus-filled bumps may appear in severe cases. 2. **Allergic dermatitis:** Including eczema and urticaria, caused by contact with allergenic substances. Allergic dermatitis can cause localized redness and swelling, itching, and in severe cases, may lead to suppuration and small pus-filled bumps. 3. **Dyshidrotic eczema:** The exact cause is not fully understood, but may be related to ultraviolet radiation, psychological factors, etc. Dyshidrotic eczema may cause severe itching when exposed to external irritants, and small pus-filled bumps may also appear. 4. **Folliculitis:** Inflammation of the hair follicles caused by bacterial infection,表现为 localized red bumps, pus-filled bumps, and pain. 5. **Other factors:** Such as sebaceous cysts or localized inflammatory reactions after insect bites, which may also lead to small pus-filled bumps on the hands. When this symptom occurs, it is recommended to seek medical attention promptly and receive targeted treatment based on the specific underlying cause.