What causes bald spots?

Those undergoing chemotherapy may experience bald patches quickly, followed by complete hair loss.

Hair loss in humans is called alopecia. Bald patches usually develop on the head, but they can develop on other parts of the body. The precise cause of these bald patches varies from case to case, but often includes factors such as aging, genetics, malnutrition, illness, and medications. Contrary to popular belief, baldness is not caused by dandruff, wearing hats too often, or poor blood circulation to the scalp, and different types of alopecia are associated with a separate trigger. Bald spots may eventually grow back, or they may not, and it is the underlying cause of baldness that determines the longevity and severity of bald spots.

It is a myth that baldness is caused by dandruff.

Androgenic alopecia is the most common form of baldness in humans and is sometimes called androgenic alopecia or androgenetic alopecia. Depending on the gender of the bald individual, this condition is more commonly known as male pattern baldness or female pattern baldness. Androgenic alopecia in men is marked by an indentation of the hairline that starts at the temples and ends at the crown. Over time, bald patches develop on the top of the scalp. Female pattern baldness is different from male pattern baldness in that it usually does not cause bald patches but a general thinning of the hair on the scalp.

Male pattern baldness – a receding hairline on the forehead and a bald area at the back of the neck – can be caused by genetic factors and low levels of the hormone testosterone.

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Androgenic alopecia has been linked to changes in age and hormones, as well as a person’s genetic makeup. It becomes more severe with age, and studies suggest that nearly 75% of men and 60% of women over 80 experience hair loss in the mid-front of the head.

Men with androgenic alopecia often have different hormone levels than other men. Total testosterone levels are normally lower, but the level of free androgens such as dihydrotestosterone (DHT) is quite high. Most research indicates that male pattern baldness is, to some extent, X-linked, or linked to X-chromosome transmission, as well as other genes that do not appear to be related to sex. They concluded that men with fathers who experienced hair loss have a much higher risk of developing hair loss as well.

Bald patches can occur in older women.

Another form of hair loss is alopecia areata, which causes sudden hair loss in a specific area. Due to its tendency to develop quickly and cause baldness in a specific area, it is commonly referred to as localized baldness. Very rarely, alopecia areata is known to spread beyond its initial zone to the entire scalp or even the entire body. It is not contagious and is considered an autoimmune disorder in which the individual’s immune system attacks the hair follicle, causing swelling and hair loss. Hair lost as a result of this condition usually returns after several months.

Nearly 75% of men and 60% of women over the age of 80 experience hair loss in the middle frontal region of the head.

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Toxic alopecia is marked by the interruption of growth in the anagen phase, which causes hair strands to weaken and break. This condition can result from a number of causes, including severe illness or fever, high doses of vitamin A, chemotherapy, radiation therapy, and some illnesses. Hair loss is usually temporary and stops when the body recovers.

Bald patches are also caused by scarring from alopecia, which occurs when scarring on the epidermis prevents hair growth. Scars usually manifest after serious injuries such as burns, but they can also be caused by diseases such as tuberculosis, lupus, some skin infections, and skin cancer. Scars often permanently prevent hair from coming back

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