Sparse hair

Introduction Some people, the hair on the body is very rare, medically known as "special hair is scarce." Idiopathic hair thinness has a family history. In addition to the loss of pubic hair and armpit hair, the body hair is usually sparse, but there is no other discomfort, the sex hormones and sexual functions are normal, and the endocrine hormones are normal. This disease has no effect on the human body, nor does it affect fertility and does not require treatment. Of course, the loss of pubic hair can sometimes occur in some organic diseases, such as anterior pituitary dysfunction, hypothyroidism, testicular feminization syndrome. However, patients with vaginal hair should be accompanied by other symptoms, such as hypothyroidism, accompanied by hair, eyelashes, eyebrows, hair loss, cold, generalized edema, weight gain, and decreased thyroid hormone levels. Patients with sexual dysfunction also have abnormalities such as spasm, poor sexual organ development, poor breast development, amenorrhea, and low levels of sex hormones. If you are not at ease, you can go to an endocrinology specialist to check for thyroid hormones, gonadal hormones, androgen receptors, estrogen receptors, B-ultrasound, and chromosomes. In case there is indeed the above disease, the corresponding treatment can be accepted.

Cause

Hair is scarce, that is, hair, eyelashes, eyebrows, pubic hair and mane are rare, fragile and dull, and easy to fall off. Can be divided into systemic or local causes, if it is a systemic disease, it is generally reduced hair, mostly caused by endocrine dysfunction, such as anterior pituitary hypofunction, hypothyroidism, parathyroid function Caused by hypotension and sexual dysfunction. The recovery period of some severe infectious diseases and some chronic diseases (such as nephritis, cirrhosis and malnutrition) can also cause hair thinness; those who are undergoing chemical drugs and radiation therapy can cause temporary hair loss, but after stopping the drug , you can gradually recover. Local skin lesions cause hair thinning or alopecia, more common in head lice, radiation dermatitis, leprosy, pyoderma and exfoliative dermatitis.

an examination

Related inspection

Hair hair mineral inspection

The hair is born in the hair follicle, grows, and then falls off. Under normal circumstances, an average of 50-100 hair loss per day. The spring and autumn seasons are seasons where the seasons are very alternating and also the season of hair loss. If the hair is found to be thinner, the hair loss increases, and the roots of each hair drop have small white spots, and the hair becomes brittle. This is a signal of hair loss, indicating that the collagen in the hair follicle is hardening, which hinders the healthy growth of the hair.

Differential diagnosis

1. Systemic hair is sparse

(1) Endocrine hair is sparse: common in anterior pituitary dysfunction (Xihan disease), hypothyroidism, hypogonadism, and secondary polygland insufficiency (such as severe acute infectious disease or severe infection recovery) , chronic wasting diseases and malnutrition, etc.).

(2) drug-induced hair scarcity: common in anti-tumor drugs, such as cyclophosphamide, bleomycin, 5-fluorouracil and vincristine caused by hair thinning.

2. Local hair is sparse: common in skin diseases, such as alopecia areata, head lice, seborrheic dermatitis and purulent acne.

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