Itchy wrists may be caused by diseases such as insect bite reaction, contact dermatitis, pruritus, or other diseases such as eczema. 1. Insect bite reaction: insect bite reaction is mainly related to insect bites, the patient’s main symptoms are redness, swelling, itching, blisters and so on. 2. Contact dermatitis: contact dermatitis is mostly caused by allergic phenomenon due to contact with exogenous substances, and patients will have symptoms such as erythema, papules, itching, burning, etc. In addition, patients with contact dermatitis will also have symptoms such as itching, blistering, and swelling. In addition, contact dermatitis patients will also appear fever, headache, nausea and other symptoms. 3. Pruritus: the cause of pruritus is more complex, the most common cause of dry skin. The main symptom of patients for the whole body or local itching, itching will be a place to extend to the whole body. 4. Other: eczema, sweating herpes and other diseases can also lead to the phenomenon of itchy wrists. Patients with symptoms of itchy wrists should go to the hospital in a timely manner, under the guidance of the doctor to take regular treatment measures to avoid aggravating the condition.