When you walk, go to work, eat and other uncertain moments, anal itching suddenly appeared, I believe this is a lot of people have had the embarrassing symptoms, anal itching disease makes people suffer, seriously affecting the patient’s daily life, then, why does the anus often itch? How do we cope with frequent anal itching? Anal pruritus is a skin disease without primary skin damage and only itching symptoms. Can be divided into primary pruritus and secondary pruritus. Primary pruritus, the cause of which is unknown, is not easy to treat; and pruritus confined to the anus, often secondary to anorectal disease, after lifting the cause of the disease, can often be cured. The causes of anal pruritus 1, systemic factors (1) spicy food stimulation: chili peppers, spices, white wine consumed too much, can induce the disease. (2) allergic reaction: certain proteins (fish, shrimp, crab, etc.), drugs, pollen, etc. can lead to human allergies, producing excessive histamine, which acts on the peripheral nerves and produces itching sensation. (3) endocrine diseases: endocrine disorders, bile acid, urea and other metabolites in the body accumulation, malnutrition, some blood diseases, etc.; (4) psychiatric factors: overexcitement, depression or neurasthenia, etc. (5) drug stimulation: morphine, quinine, anesthetics, antibiotics, etc. (6) genetic factors (2) local factors (1) local friction, chemical fibers, and hot and cold stimulation, etc. (2) the perianal sweat glands, sebum, etc. (2) abnormal secretion; fecal indoleum, seborrhoea, sebaceous, and other substances. Abnormal secretion; fecal indole odorant, slag accumulation in the anal folds to stimulate the skin. (3) anorectal diseases: anal fistula, hemorrhoids, prolapse, anal sinusitis, anal papillitis, anal incontinence, etc. to stimulate the anal glands, so that the secretion of glandular fluid increases, resulting in anal moisture, irritation of the skin, itching. (4) pinworms, trichomonas vaginalis, vaginitis, prostate hypertrophy, etc. Hazards of pruritus ani The initial stage of the disease, limited to the itching of the skin around the anus, sometimes heavy and sometimes light, sometimes stinging and sometimes burning pain, sometimes such as insects and ants, sometimes such as mosquito bites and fire baking, and sometimes the itching is intolerable, and even more so at night, making people uneasy to sleep and sit down. Due to scratching the skin ulceration, oozing, crusting, long-term non-healing, resulting in thickening around the anus, wall hypertrophy and roughness radial folds, mossy changes, hyperpigmentation or pigmentation, and even spread to the perineum, scrotum, labia or sacrococcygeal area. Disease for a long time, easy to secondary chaffing. In the long run, it can cause neurasthenia, mental depression, food tasteless, sleepless nights. How to prevent anal itching 1, timely treatment of anal itching caused by local and systemic diseases, such as hemorrhoids, anal fissure, anal fistula, perianal eczema, diarrhea, diabetes, parasitic diseases. 2, the underpants should not be too tight, too hard, it is appropriate to wear cotton loose fitting underpants, do not wear synthetic fiber underpants, and to wash and change. 3, pay attention to the combination of work and rest, maintain a happy mood, to prevent excessive tension and anxiety, do not scratch the anus, do not use too hard objects to rub the anus. 4, keep the anus clean and dry, as far as possible, wash the anus once a night. Wash the perianal area with warm water. Generally do not use soap, especially can not use alkaline strong. Cleaning towels, washbasin, etc. should be used exclusively to avoid cross-infection. 5, to prevent constipation, eat more fruits and vegetables, drink more boiled water, to maintain smooth bowel movements, can effectively excrete body wastes, to prevent rectal discharge of ooze stimulation anus caused by itching. Do not eat or eat less stimulating food, such as chili, strong tea, coffee, high alcohol. Allergic people should eat less allergenic food, such as fish, shrimp, etc., to avoid contact with allergy-causing chemicals. 6, more than perianal itching, but the skin is not broken, gauze or cotton wool can be immersed in boric acid liquid, the water temperature is appropriate, take out the wringing to the non-dripping water, applied to the perianal area, can immediately stop the itching. Every morning and evening 1 time, each time about 5 minutes. Wipe dry after applying, puff with talcum powder.