What causes itchy skin?

Skin itching may be caused by various factors. It can result from systemic conditions such as diabetes, polycythemia vera, iron-deficiency anemia, and other blood disorders, as well as liver or biliary diseases, endocrine abnormalities (such as pruritus of pregnancy, diabetes, thyroid disorders), urogenital diseases, or malignancies. Skin diseases like eczema, contact dermatitis, urticaria, and tinea corporis can also lead to skin itching. These skin conditions may be triggered by environmental factors, psychological stress, allergies, or infections. Physiological factors such as excessive washing or hot water bathing, inadequate hydration and moisturization, and wearing synthetic fiber clothing that irritates the skin may also contribute to itching. Therefore, when experiencing body skin itching, appropriate treatment should be based on the underlying cause. It is recommended to promptly visit a dermatology department at a hospital, undergo relevant examinations, and receive targeted treatment according to the specific condition.