What Is Pruritus?

Word: Itching

[sào yng]

Pruritus is a conscious symptom common to many skin diseases. It is called pruritus when itching is present in the skin without primary skin damage.

Western Medicine Name: Itching
English name: pruritus
Other name: Pruritus
Affiliated Department: Department of Physiology-Dermatology
Disease site: whole body
The main symptoms: Secondary skin lesions

Main cause: Histamine release from affected area promotes itching
Multiple groups: More common in middle-aged men
Contagious: Non-contagious
Whether to enter health insurance: Yes
Green therapy: Body cream
Treatment characteristics: Convenient and safe
Cure principle: Relieve wind and dampness, clear heat and detoxify

Itching definition

Word: Itching

Pinyin: sào yng

Basic explanation

[pruritus] Itchy and uncomfortable skin

explain in detail

1. Also known as "itch". Itchy skin. Qing Pu Songling's "Liaoyi · Lianxiang": "Several days, itching all over the body, peeling off the skin." Itching scratches red with purple dots. "Note:" This ulcer is an octapod born in the anterior pubic hair ... itching is unbearable, scratching the color red with purple dots. "

2. Tickle it with your nails. Yuan Wuming's "Bo Wang Shao Tun" third fold: "I set Xishu early, so I visited Nanyang and went straight to Cao Cao and Sun Quan. It seemed like itching."

Itching symptoms

According to the scope of allergies, the disease is divided into two types: systemic and local.

Pruritus systemic pruritus

Patients have paroxysmal pruritus throughout the body and often move from one place to another. The degree of itching varies, some can be tolerated, others are consciously itching, need to brush the skin with iron brush or hot water, until the skin bleeding and pain and burning, the itching temporarily reduced; often worsened at night , Affecting patients' sleep. Due to the severe itching and scratching, secondary skin lesions such as scratches and hemorrhoids may appear on the skin, sometimes with eczema-like changes, lichenification, or pigmentation. Scratched skin is prone to secondary bacterial infections.

Systemic pruritus can be divided into:

(1) Pruritus senilis: It is mostly caused by factors such as reduced sebaceous gland secretion, dry skin, and degenerative atrophy, which is more common in the trunk.

(2) Pruritus hiemalis in winter: It is induced by cold, often accompanied by dry skin, which becomes worse when undressed and sleeping.

(3) Pruritus aestivalis: High heat and humidity are often the inducements, and sweating often makes itching worse.

Local pruritus

Itching occurs when itching occurs in one part of the body.

(1) Anal pruritus: most common. Both men and women can develop the disease, more common in middle-aged men, and more common in children with roundworm. Itching is often confined to the anus, sometimes spreading forward to the scrotum, and back to the sides of the gluteal groove. The skin around the anus is often grayish or pale white, with anal folds and hypertrophy, and radial clefts due to scratching; secondary infections sometimes occur; the skin around the anus thickens to mossy, and pigmentation can also occur .

(2) Pruritus pruritus: It mainly occurs in the labia majora, labia minora, and the clitoris and clitoris. Because itching often scratches constantly, the vulvar skin is hypertrophic, and it is gray-white dipping, and the clitoris and vaginal mucosa may appear red and swollen and eroded.

(3) Scrotal pruritus: Itching occurs in the scrotum, but it can also affect the penis or anus. Due to constant scratching, the scrotal skin was hypertrophic, pigmented, and lichenoid. Some patients saw erosion, exudation, crusting, and eczema-like changes.

(4) Others: such as pruritus of the head, pruritus of the lower leg, and pruritus of the palms. In addition, there is still hereditary localized pruritus, which is more common in women 20 to 30 years old.

Causes of pruritus

Itching The cause of the disease is complex. Experiments have shown that there is an itchy receptor on the skin of the dog, which is transmitted to the brain through nerve endings. The release of histamine from the affected area can promote itching. Scratching itching has an antipruritic effect due to tenderness, but it also promotes the release of more histamine, aggravates the itching sensation, and forms a vicious cycle of scratching and scratching, leading to more severe skin damage and inflammation. Traditional Chinese medicine believes that the main causes of disease are wind evil, wet evil, heat evil, blood deficiency, and insecticidal disease. Antipruritic effect.

Pruritus universalis is often associated with certain systemic diseases such as diabetes, uremia, hepatobiliary disease, visceral tumors, blood diseases, thyroid diseases, allergic diseases, intestinal parasites, habitual constipation, irregular menstruation , Pregnancy and mental anxiety, neurological diseases and so on.

Hodgkin's pruritus is persistent, sometimes accompanied by a burning sensation. The incidence of pruritus is 10% to 25%, and it is the first symptom in 7% of patients, but the cause is unclear; more than a third of patients with erythrocytosis have pruritus. Disease, often caused by temperature changes and has nothing to do with histamine levels; 20% to 50% of patients with obstructive jaundice have itching, and the itching intensity is sometimes parallel to the bile salt concentration in the skin. High and naloxone treatment is effective, so itching may be caused by central mechanisms.

Systemic intolerable pruritus is also common in uremia patients, which may be related to certain metabolic imbalances; visceral tumors are found in 3% to 47% of patients with systemic pruritus. Skin condition dysfunction (such as dryness, atrophy, etc.) and climate change (such as hot, cold, etc.) can cause itching; exposure to dust, fiberglass, dust mites in daily work and life, consumption of some spicy, irritating food, These tight-fitting clothing can cause systemic itching. Systemic pruritus can also be caused by drugs such as opiates, niacin, antidepressants, cimetidine, and certain central nervous system stimulants.

The etiology of pruritus localis is sometimes the same as that of systemic pruritus. For example, diabetes can cause both systemic pruritus and local pruritus. Pruritus ani is mostly related to ascariasis, prostatitis, hemorrhoids, and anal fistula. Pruritus scrotal is often related to local sweating, friction, and jock itch. Pruritus vulvae Most of them are related to leucorrhea, vaginal trichomoniasis, vaginal mycosis, gonorrhea, diabetes, and cervical cancer. They may also be caused by endocrine disorders, low levels of sex hormones, and autonomic dysfunction in menopause.

Clinical diagnosis of pruritus

It is easy to diagnose based on no pruritus and only itching. In order to find the causative factors, a comprehensive physical examination and laboratory tests are often required.

Once secondary skin lesions occur, they need to be distinguished from the following diseases based on medical history:

(1) Urticaria: there are specific skin lesions (wind masses) and the course of the disease.

(2) Insect bites: Typical skin lesions are wind-like papules with vesicles at the top, and most have no systemic symptoms.

(3) Drug rash: there is a clear medication officer, there is a certain incubation period, the skin lesions suddenly occur, in addition to fixed drug rash, multi-symmetric distribution.

(4) Scabies: There is a history of exposure to infections, prevalent areas, and typical skin lesions. If chigger mites can be found, the diagnosis can be confirmed.

Itching treatment

Itching Strive to find out the cause and cure it.

1. General treatment

Pay attention to skin hygiene and strive for regular life. Avoid scratching, scalding in hot water, avoid alcohol, strong tea, and spicy foods. Patients with systemic diseases should actively treat the primary disease; for patients with neurasthenia, sedatives and hypnotics can be appropriately selected.

2. Systemic treatment

(1) Antihistamine: It is a first-line drug. Various H1 receptor antagonists can be used. H2 receptor antagonists can also be used in combination. Calcium and vitamin C can enhance the efficacy of antihistamines.

(2) Procagan hydrochloride venous closure: Procaine is dissolved intravenously in physiological saline for 10 days as a course of treatment; in severe cases, intravenous lidocaine is effective, but the duration of the effect is short (only a few hours) and Can cause hypotension. Long-term use of procaine hydrochloride, lidocaine, etc. needs to pay attention to the possibility of contact allergy.

(3) Sex hormones: Commonly used in elderly patients, male patients use testosterone propionate twice a week intramuscularly, or methyltestosterone orally; female patients can use diethylstilbestrol, two times orally, or progesterone intramuscularly. Reproductive system tumors or liver and kidney dysfunction should be avoided or used with caution.

(4) Others: Naloxone injection is effective in patients with cholestasis, and amitriptyline can be used when it is not effective.

3 Local treatment

(1) Topical drugs: such as phenol calamine lotion, glucocorticoid ointment or cream; patients with genital pruritus or pruritus should avoid using irritating drugs. At present, the most common topical herbal cream is 3 to 5 times daily for thorough treatment.

(2) Local closed therapy: Diphenhydramine 25mg plus appropriate amount of procaine for subcutaneous infiltration injection, once every other day; Triamcinolone or dexamethasone plus appropriate amount of procaine for subcutaneous injection Closed, 1-2 times a week. The external use Chinese medicine skin cream is safe and non-irritating, which makes up for the disadvantages of hormone drugs.

Itching prevention

To prevent itchy skin in winter, please reduce the number of baths. If you take a bath every day, it is recommended to wash with warm water for a short time and avoid long-time high water temperature. Usually drink plenty of water, supplement the body and skin moisture loss, and appropriately supplement foods containing vitamins A and E, such as carrots, cabbage, peanuts, sesame and so on. In addition, glycerin, petroleum jelly, olive oil and other moisturizing skin care products can also be used to lock the skin surface moisture and relieve dryness and itching.

Itching health

Method of diet:

Mulberry Sesame Cream

[Recipe] 100g black mulberry, 100g black sesame, 50g Polygonatum, 50g Ophiopogon, 50g raw land, 300g honey.

[Production] Put Huang Jing, raw land, and Ophiopogon into the casserole, add appropriate amount of water to cook, take the medicinal juice once every 30 minutes, then add water and decoction, repeat 3 times, the medicinal juice is combined and set aside.

Put the medicinal juice into the casserole with mulberry and sesame, and boil it with wuhuo. When it is boiled before the flames, add honey and stir well. Fry it a little. After cooling, store the bottle for later use.

[Usage] 10-20g each time, boiled with water, drink once in the morning and evening.

[Efficacy] nourishing blood and nourishing liver, nourishing yin, moistening dryness, removing wind and itch.

[Application] It is suitable for pruritus of blood deficiency and dryness.

[Should be avoided] People with diabetes should not eat it; avoid spicy spicy food while taking the cream.

Causes of itching vulva itching

Itching 1. Local skin uncleanness: Some women use toilet paper improperly. The vulva skin is affected by menstrual blood, vaginal secretions, and even urine, feces, and sweat. It causes chronic inflammation of the local skin, which causes itching of the vulva.

2. Sexual allergies: This is a reflection of allergies that occur during both sexes. They are allergic to semen, condom, and friction.

3 Drug allergy: Women with allergies have "fixed drug rash" caused by sulfa drugs or other drugs. They often occur at the junction of the skin and mucous membranes of the vulva. In addition to local itching, they can be accompanied by erosion and exudation. Vaginal irrigation or vaginal implantation using drugs can also cause vulvar itching if allergic reactions and contact dermatitis occur.

4, fungal vaginitis: vulva, vaginal pruritus, vulvar flushing, with dregs-like vaginal discharge, odor, scratching can cause vulvar dermatitis and eczema changes.

5. Vaginal trichomoniasis: itching of the vulva and vagina, foamy leucorrhea, often accompanied by a special odor, the same changes in the vulvar dermatitis and eczema after scratching. A vaginal discharge smear test can be distinguished from the disease above.

6. Sexually transmitted diseases: Condyloma acuminata mostly occurs in the vaginal wall, cervix, and vulva of women. There are also leucorrhea with a foul odor. Infectious soft warts that occur in the vulva are mostly manifested as round papules with a umbilical fovea-like depression in the center. Itching of the vulva. Genital herpes mostly manifests as rice grain-sized and bright blisters on the urethral opening and vaginal wall, with local itching. ^[1]

Five tips to prevent itching

1. Eat more coarse grains in your diet, such as oats, brown rice, corn, pumpkin, whole wheat bread, etc., can supplement B vitamins and strengthen the skin. Jujube, wolfberry, and various nuts have the effects of nourishing blood, nourishing yin, and nourishing the skin. You can eat more appropriately. Spicy food will damage the Yin fluid and aggravate skin dryness; fishy foods such as mutton and seafood will increase itchy skin. It is recommended to eat less or not.

2. Wear loose cotton and silk clothes to avoid friction between chemical fiber clothing and skin, and avoid skin irritation caused by static electricity. Newly bought underwear is recommended to be washed before wearing to prevent skin residues caused by chemical residues during the garment manufacturing process.

3 Ensure sleep, relax and exercise moderately.

4 Strengthen skin touch. Touching the baby will make the baby emotionally stable and healthy. The same is true for the skin. It takes our care to be healthy. The symptoms of dryness, itching, and tingling are all protesting to us. While scratching with sharp nails can temporarily work, it will cause greater damage to the skin, and as a result, the vicious cycle and itching of the skin will become more and more serious. The method of touching is: apply body lotion or essential oil every night before going to bed, and gently massage the whole body skin with warm palms and fingertips, and increase the intensity appropriately for severe itching parts.

Itching related knowledge

Anal itching treatment

1. Sulfur ointment can only relieve the inability to cure, stop and repeat it easily, generally requires 1-2 months. Apply 3-5 times a day. poor effect.

2. Lin Dan cream, also relieves symptoms of pubic lice, is more toxic and cannot be cured. Generally, it is required to use it 3-5 times a day for 20-30 days. poor effect.

Precautions

1. Shave pubic and perianal hair and burn them.

2. Disinfect contaminated clothing, sheets, hoods by boiling or boiling water to kill eggs and adults.

Itchy Classical Chinese

Itching

Itchy to someone, so that his son asked for it, Sansuo Erfu. Make his wife ask for it, Wusuo and Wufu also. His man was furious but said: "I know my wife, but it's hard for me?" Which one? People who itch do not know what others know. Knowing it by heart, Ningfu is almost!

Itching translation

Someone had an itching on his back, so he asked his son to help him, and scratching it three times was not an itch; asking his wife to help scratching it five times was not an itching. The man said angrily, "My wife and children are all my own, but why is it harder than me?" So he raised his hand and scratched, and it didn't itch. why? The feeling of itching is something that only one can feel, others don't know. I only scratched when I knew, how could I miss it!