There are many factors that can cause itching on the body, not all of them are caused by diseases, such as dry environment, contact with allergic substances can cause itching on the body. The itchy body can also be caused by skin diseases or certain internal diseases. 1. environmental factors: cold and dry weather in winter and humid and hot weather in summer can lead to skin sensitivity and cause itchiness on the body; 2. skin diseases: including allergy-induced and non-allergy-induced skin diseases. If people with allergies are in contact with certain substances, such as wearing chemical fiber intimate clothing, contact with irritating cosmetics, contact with animal fur, plant pollen, etc., they may experience different degrees of itchy performance on their bodies, accompanied by redness, swelling and tingling. In addition, some non-allergic skin diseases, such as neurodermatitis, psoriasis, ringworm, etc., can also cause itching on the body; 3. Internal diseases: when suffering from certain internal systemic diseases, such as chronic kidney disease, hyperthyroidism, diabetes, parasitic infections, etc., itchy skin can occur, generally systemic. While suffering from vaginal infection disease, hemorrhoids, etc., there can be localized itching of the diseased skin; 4, mental factors: when mental tension, anxiety or depression, some patients can have itchy skin, it is recommended to go to the hospital in a timely manner, which can be targeted for psychological guidance and can generally be alleviated. For itching triggered by dry skin, emollient cream can be used to relieve. If the itching is accompanied by other symptoms, or if there is a primary disease, it is recommended to actively seek medical treatment.