Baldness or loss of hair is referred to as alopecia. Alopeciatalis means loss of all the scalp hair. Alopecia Universalis means loss of all body hair, including eyebrows and eyelashes. If hair falls out in patches, it is termed alopecia areata,his condition is usually temporary and rarely leads to baldness. Factors that are involved in hair loss include heredity, hormones, and aging. Researchers have yet to determine the exact cause of hair loss, but some scientists believe the body's immune system mistakes hair follicles for foreign tissue and attacks them. Many suspect a genetic component.
A less dramatic, but more prevalent, type of hair loss is androgenetic alopecia (AGA), or male pattern baldness. AGA is common in men. As the name implies, a genetic or hereditary predisposition to the disorder and the presence of androgens-male sex hormones-are involved in this condition. Research indicates that the hair follicles of individuals susceptible to AGA may have receptors programmed to slow down or shut off hair production under the influence of androgens. loss, but it's not usually as extensive and most often does not until after menopause, All women experience some hair thinning as they grow older, especially after menopause, but in some, it begins as early as puberty. In addition, most women lose some hair two or three months after having a baby because hormonal changes prevent normal hair loss during pregnancy. A species of tiny mite, Demodex follicular, may be the cause of, or a contributing factor to, balding. These mites represent in virtually all hair follicles by the time a person reaches middle age, and in most cases causes no harm. Researchers believe that the difference between people lose their hair and those who do not may lie in how the scalp reacts to the presence of these mites. If the body initiates the inflammatory response as it tries to reject the mites, he may close down the hair follicles, thus killing the mites also killing the hair. In addition to heredity, factors that promote hair loss include poor circulation, acute illness, surgery, radiation exposure, skin disease, sudden weight loss, high fever, iron deficiency, diabetes, thyroid disease, drugs such as those 1sed in chemotherapy, stress, poor diet, ringworm and other fungal infections, chemicals such as hair dyes, and vitamin deficiencies.