hairloss resulting from trauma

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Hamilton first noted that androgens (testosterone, dihydrotestosterone) are necessary hairloss for the development of MPHL. The amount resulting of androgens present does not need from to be greater trauma than normal for MPHL to occur. If androgens are present in normal amounts and the gene for hair loss is present, male pattern hair loss will occur. Axillary (under arm) and pubic hair are dependent on testosterone for growth. Beard growth and male pattern hair loss are dependent on dihydrotestosterone (DHT). Testosterone is hairloss converted to resulting DHT by the enzyme, 5a -reductase. from Finasteride (Propecia) acts by blocking this enzyme and decreasing the amount trauma of DHT. Receptors exist on hairloss cells that bind androgens. These receptors have the greatest affinity for DHT followed by testosterone, estrogen, and progesterone. After binding to the receptor, resulting DHT goes into the cell and interacts with the nucleus of the cell altering the production of protein by the DNA in the nucleus of the cell. Ultimately growth of the hair follicle ceases.

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

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hairloss resulting from trauma

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