What is the cause of chrysanthemum itching

The anus is the human anus. There is a circle of sphincter around the human anus. When the human body defecates, the purpose of defecation is achieved through the contraction of the sphincter. However, some people find that their anus itches for no reason when they have a bowel movement or when they do not have a bowel movement. The anus is a private place with many bacteria, and you cannot scratch it with your hands, which makes people feel uncomfortable. So what is the cause of anal itching?

Causes

1. Food factors

Excessive consumption of spicy foods and condiments, such as chili peppers, alcohol, mustard, pepper, spices, coffee, etc., can cause irritation to the anal canal and anal skin, and induce itching.

2. Allergic reaction

Certain proteins (fish, shrimp, crab, etc.), medicines, pollen, lacquer, etc. can cause allergies in some people, causing excessive histamine to be produced in the body, which acts on the peripheral nerves and causes itching.

3. Mental factors

Mental overexcitement, depression, neurasthenia, addiction, etc.

4. Fungal and viral infections of the perianal skin

Common infections include epidermophyton and other infections.

Classification

Classification by cause:

1. Primary anal pruritus

The cause is unknown, there is no primary damage, and the main symptoms are itching and stubbornness. 45%-70% of cases are primary anal pruritus.

2. Secondary anal pruritus

Secondary to primary diseases and various skin diseases, accompanied by obvious specific skin damage, itching is a symptom of primary lesions, such as itching caused by anal fistula, perianal eczema, condyloma acuminatum, neurodermatitis, pinworms, etc.

Clinical manifestations

1. Itching

In the early stage, the itching is limited to the skin around the anus and is paroxysmal. It is often aggravated at night, when it is quiet, when the mood changes, when eating spicy food, or when it is hot and humid. In severe cases, the itching is unbearable.

2. Pain

The itching may be mild or severe, sometimes stinging or burning. Scratching causes the skin to ulcerate, ooze, and become incrusted, which will not heal for a long time.

examine

A full physical examination should be performed, and targeted laboratory tests should be performed, such as routine blood, urine, and stool tests, liver and kidney function tests, urine sugar, blood sugar, glucose tolerance tests, and tissue biopsy and smear tests.

diagnosis

Based on the typical history of anal itching combined with clinical symptoms and signs, this disease is not difficult to diagnose, but it is more difficult to determine the cause.

treat

1. Treatment principles

Actively look for and eliminate possible causative factors, apply topical antipruritic agents, and block local subcutaneous sensory nerves if necessary.

2. TCM Syndrome Differentiation and Treatment

(1) Internal treatment: Use Chinese medicine according to TCM syndrome differentiation: ① If wind-heat attacks the lungs and moves to the large intestine and anus, the treatment should be to clear away heat, purge fire, and promote bowel movements. The prescription used is Liangge San. ② For those with wind evil accompanied by dampness or damp-heat in the liver and gallbladder, which blocks the anus, the treatment should be to dispel wind, clear heat and remove dampness. The prescription can be Xiaofengsan or Longdanxiegan Decoction. ③ Danggui Yinzi is used for those who suffer from blood deficiency, wind-induced dryness, and skin malnutrition. ④ For those with blood stasis causing wind and those with stagnation that cannot be dispersed, the treatment should be to remove blood stasis and wind, and the prescription should be Shufeng Jiedu Decoction. ⑤ If insect poisons invade the anal area, or if dampness or drug poisons block the posterior genitals, the treatment should be to kill insects, detoxify and relieve itching. The prescription is Wumei Pills.

(2) External treatment: ① For those with moist skin, sprinkle alum powder on the affected area 3 times a day. ② Those with dry skin can apply Coptis chinensis ointment or Indigo ointment externally 3 times a day.