What causes hair loss?

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What causes hair loss?

Hair loss is divided into without scarring. (non-scarring alopecia) and hair loss with scarring (scarring alopecia) for factors that cause. It is divided into external factors and internal factors that trigger abnormal hair loss.

External factors that cause and thinning hair

  • Use of certain drugs, such as immunosuppressants, chemotherapy drugs, blood thinners, anticonvulsants, certain types of สมัคร ufabet blood pressure lowering drugs, drugs to treat osteoarthritis and arthritis. Some antidepressants Acne medicines that contain vitamin A, birth control pills
  • Fungal infection of the scalp
  • Radiation from cancer treatment
  • The scalp has been injured from being pulled, pulled, or scratched, causing wounds.
  • The hair has been pulled continuously for a long time, such as from sticking hair, tying hair, braiding the scalp.
  • Chemicals in hair perming, dyeing, and coloring products
  • Hair that is exposed to high heat from hair straighteners or sunlight causes the keratin in the hair to be destroyed. Hair is therefore easily brittle and easily falls out.

Internal factors that cause and thinning hair

  • Due to heredity and hormones (Androgenetic alopecia, AGA) is most often found in males. It can be caused by passing on dominant genes on the body’s chromosomes. and multifactorial inheritance from many genes combined with environmental factors. (multifactorial inheritance) makes the scalp more sensitive to the hormone DHT. dihydrotestosterone (DHT) causes hair to atrophy and fall out easily. Have a shorter lifespan than normal Most of the symptoms will begin to show from the age of 18-25 years and will fall more as you age. The way to notice is that the hair in the front and middle of the head will become thinner and there is a family history of hereditary baldness.
  • Alopecia areata (AA) is caused by a malfunctioning immune system. Causes the cells around the hair roots to become inflamed. until unable to produce new hair
  • Hair loss from body stress or severe illness (Telogen effluvium) occurs when the body has a severe illness, whether mental or physical. As a result, hair in the telogen phase falls out faster and more than usual. Hair usually falls out after about 3 months of illness. Illnesses that trigger this type of hair loss include high fever, dengue fever, and accumulated stress. Acute changes in hormonal levels, which are often seen in mothers after giving birth. After giving birth, etc.
  • Hair-pulling condition caused by psychological problems (Trichotillomania)
  • Autoimmune disease SLE/DLE (Systemic Lupus Erythematosus, Discoid Lupus Erythematosus)
  • abnormal thyroid hormones
  • Certain nutritional deficiencies such as iron deficiency, protein deficiency, rapid weight loss, vitamin D deficiency, etc.
  • congenital hereditary disease that causes abnormal hair formation
  • Some infectious diseases, such as syphilis