Alopecia (al-o-PEE-she-uh) is the medical term for hair loss or baldness in an area of the body where hair is normally present. Usually, it refers to loss of scalp hair. Two patterns of hair loss are female-pattern baldness (general thinning with moderate loss at the hair line and crown) and male-pattern baldness (receding hair line with moderate to extensive loss at the crown).
Alopecia areata
Alopecia is a medical term for baldness; areata means that the hair loss occurs in localized areas usually involving the scalp or the beard in men. It is equally common in both sexes and tends to be more common in young adults and children than in older people. The onset is usually sudden with the appearance of one or more patches of smooth, hairless skin. The cause is unknown, although disturbances of the immune system (autoimmunity) may be involved. It is more common in people with allergic problems.
Androgenetic Alopecia, male or female pattern hair loss
The most typical pattern of balding whereby the balding pattern is controlled by hormones.
Androgenetic Alopecia can be broken down in two parts. First, Androgenetic, consisting of ANDROGEN (Any of the various hormones that control the appearance and development of masculine characteristics such as testosterone). And GENETIC -- the inheritance of genes from either the mother of the father's side of the family. Add AGE, which when coupled with genetics, represents a time clock that will signal the hair follicle to produce an enzyme name 5 alpha reductase. When the testosterone present in the follicle combines with the enzyme 5 (DHT). Hair follicle receptors are sensitive to DHT and thereby start the process of male or female patter hair loss. Second, Alopecia meaning hair loss of which there are many types.
Alopecia totalis, Patchy hair loss
Patients with alopecia areata lose hair on their scalp in smooth round patches typically causing bald spots about an inch (2cm) across. Sometimes the patches are larger, and the condition can include the loss of all hair on the head (alopecia totalis), and even the loss of hair on the head (alopecia totalis), and even the loss of all hair on the body (alopecia universalis).
Alopecia (Scalp) Reduction
A procedure that involves removal of a strip of balding upper scalp in the crown and vertex areas. The natural flexibility of the scalp is used to stretch the surrounding hairy scalp into place. It can be repeated in certain cases.
Alopecia Universalis
Hair loss of the entire body, (also an advanced form of alopecia areata).
Traction Alopecia
Hair loss caused by physical stress and tension on the hair such as prolonged use of hair weaving, corn rows etc. Done too tightly on weak hair these can cause permanent hair loss.
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