Dry skin and itchy, generally considered pruritus, is a pruritic disease with a clear relationship with the dry climate, mainly related to the autumn and winter seasonal change, stronger ultraviolet light, as well as neurodermatitis, seborrheic dermatitis, common psoriasis and other disease factors, need to deal with the cause: a. Environmental factors: 1, autumn and winter seasonal change: resulting in skin dehydration, causing normal skin popping phenomenon, can be accompanied by pruritus. It can be accompanied by itchy skin, need to follow medical advice topical skin barrier repair cream, fluticasone propionate cream, etc., repair the skin barrier, improve the dry skin state; 2, strong ultraviolet rays: such as summer is too hot, prolonged exposure to outdoor sunlight is easy to cause skin redness, swelling, skin, itching and other symptoms, can reduce the number of times to go out, avoid sun exposure for too long, go out to apply sunscreen or use physical sunscreen The skin is prone to redness, itchiness and redness after exposure to sunlight. The cause and pathogenesis of neurodermatitis is still unclear, and it is generally believed that the dysfunction of excitation and inhibition of the cerebral cortex is related to infected lesions, mental tension and scratching, alcohol consumption, etc. can contribute to the development of the disease, the performance of the lesions are dry, itchy, can appear fine flaking, skin popping phenomenon. It is necessary to take anti-allergic drugs such as cetirizine as prescribed by the doctor; 2. Seborrheic dermatitis: it is often caused by factors such as lack of vitamins or sunlight exposure, and can be supplemented with vitamins under the guidance of the doctor and avoid prolonged exposure to sunlight; 3. Psoriasis vulgaris: the specific cause is still unclear, and it is considered to be mostly related to the immunity of the body. At present, it is thought to be triggered by the interaction of genetic factors and environmental factors. The lesions may appear as flaky red patches, accompanied by itching, burning or pain, with silvery-white scales on the skin surface, similar to the performance of popping skin. Treatment varies depending on the cause, severity and type of disease. Treatment methods mainly include topical or oral medication, Chinese medicine treatment, etc. Patients need to go to the hospital and the doctor will give the appropriate treatment according to the specific condition. During the medication period, pay attention to a light diet, avoid stimulating food, prohibit smoking and alcohol, and avoid staying up late.