External physical and chemical stimuli, allergies, and diseases of internal organs can cause itchy skin, which can be treated with general treatment, medication and surgery. Itchy skin caused by external physical and chemical stimuli is usually treated with general treatment, including avoiding external stimuli, paying attention to skin hygiene, avoiding overwork, maintaining a regular routine, abstaining from smoking and alcohol, and drinking less strong tea, coffee and other spicy and irritating foods. Strengthen the moisturizing, repair the skin barrier. Nervous patients should pay attention to rest, maintain a quiet and comfortable living environment. Nervous patients should pay attention to rest, maintain a quiet and comfortable living environment. The common treatment drugs for itchy skin caused by allergy are antihistamines, topical glucocorticoid hormones, immunosuppressants, such as loratadine, hydrocortisone, cyclosporine and so on. Usage should follow the doctor’s instructions, not unauthorized use of drugs. Diseases of internal organs such as cholelithiasis caused by itchy skin, usually take surgical treatment, such as gallbladder removal surgery. If the itching of the skin is not cured for a long time or aggravated, you should consult a doctor in time, under the guidance of the doctor’s treatment, and should not take any action without authorization, so as to avoid delaying the condition. Pay attention to skin hygiene, do not scratch, so as not to induce skin infection. Specific medication should follow the doctor’s instructions.