Itchy bumps on the wrist may be caused by contact dermatitis, tinea cruris, eczema and other diseases, or by other diseases such as herpes sweat. 1. Contact dermatitis: contact dermatitis is caused by an allergic reaction caused by the patient’s contact with external substances, the patient will have mild edema, pinpoint-sized dense pimples, itching, vesicles, oozing and other symptoms. In addition, contact dermatitis can also lead to burning, crusting, ulcers and other symptoms. 2. Ringworm: ringworm is an infectious disease, mainly due to dermatophyte infection. The main symptoms of patients are blisters, dryness and other symptoms, but also flaking, itching and other symptoms. 3. Eczema: the cause of eczema is not yet clear, mostly caused by internal and external factors. Patients will have pimples, edema, itching and other symptoms, but also oozing, vesicles, flaking and other symptoms. 4. Other: sweating herpes, neurodermatitis and other diseases can also lead to the phenomenon of itchy wrist bumps. Patients with symptoms of itchy wrists and bumps should consult a doctor in time and follow the doctor’s instructions for treatment.