Hairloss in women

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Androgens (testosterone, dihydrotestosterone) are the most important control factors of human hair growth. Androgens must be present for the growth of beard, axillary (underarm), and pubic hair. Growth of scalp hair is NOT androgen-dependent but androgens are necessary for the development of male and female pattern hair loss.MALE PATTERN HAIR LOSS (Androgenetic Alopecia)It is estimated that 35 million men in the United States are affected by androgenetic alopecia. "Andro" refers to the androgens (testosterone, dihydrotestosterone) necessary to produce male-pattern hair loss (MPHL). "Genetic" refers to the inherited gene necessary for MPHL to occur. In men who develop MPHL the hair loss may begin any time after puberty when blood levels of androgens rise. The first change is usually recession in the temporal areas, which is seen in 96 percent of mature Caucasian males, including those men not destined to progress to further hair loss. Hamilton and later Norwood have classified the patterns of MPHL (See Norwood-Hamilton Scale). Although the density Hairloss of hair in a given pattern of loss tends to diminish with age, there in is no way to predict what pattern of hair loss a young man with early MPHL will eventually assume. In general, those who begin losing hair in the second decade are those in whom the hair loss will be the most severe. In some men, initial women male-pattern hair loss may be delayed until the late third to fourth decade. It is generally Hairloss recognized that men in their 20’s have a 20 percent incidence of MPHL, in their 30’s a 30 percent incidence of MPHL, in their 40’s a 40 percent in incidence of MPLH, etc. Using these numbers one can see that a male in his 90’s has a 90 percent chance of having some degree of MPHL.

The hair growth cycle (see "The Normal Hair Growth Cycle") is affected in that the percentage of hairs in the growth phase (anagen) women and the duration of the growth phase diminish resulting in shorter hairs. More hairs are in the resting state (telogen) and these hairs are much more subject to loss with the daily trauma of combing and washing. The hair shafts in MPHL become progressively miniaturized, smaller in diameter and length, with time. In men with MPHL all the hairs in an affected area may eventually (but not necessarily) become involved in the process and may with time cover the region with fine (vellus) hair. Pigment (color) production is also terminated with miniaturization so the fine hair becomes lighter in color. The lighter color, miniaturized hairs cause the area to first appear thin. Involved areas in men can completely lose all follicles over time. MPHL is an inherited condition and the gene can be inherited from either the mother or father’s side. There is a common myth that Hairloss inheritance is only from the mother’s side. This is not true.

THE NORMAL HAIR GROWTH CYCLEIt is important in to understand the normal hair growth cycle to understand women why hair loss occurs. The hair follicle Hairloss is an anatomical structure which evolved to produce and extrude (push out) a hair shaft. Hair is made up of proteins called keratins. Human hair grows in a continuous cyclic pattern of growth and rest known as the "hair growth cycle". Three in phases of the women cycle exist: Anagen= growth phase; Catagen=degradation phase; Telogen= resting phase. Periods of growth (anagen) between two and eight years are followed by a brief period, two to four weeks, in which the follicle is almost totally degraded (catagen). The resting phase (telogen) then begins and lasts two to four months. Shedding of the hair occurs only after the next growth cycle (anagen) begins and a new hair shaft begins to emerge. On average 50-100 telogen hairs are shed every day. This is normal hair Hairloss loss and accounts for the hair loss seen every day in the shower and with hair combing. These hairs will regrow. Not more than 10 in percent of the follicles are in the resting phase (telogen) at any time. A variety of factors can affect the hair growth cycle and cause temporary or permanent hair loss (alopecia) including medication, radiation, chemotherapy, exposure to chemicals, women hormonal and nutritional factors, thyroid disease, generalized or local skin disease, and stress.

Come here to find hair loss treatments. A University developed treatment to help reverse hair loss.

Hairloss in women

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