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What are the most common causes of isolated hair loss in women?
Late female pattern baldness (androgenic alopecia): Hair loss in females, similar to males, is in part driven by testosterone.
Although not as common as male pattern baldness, this condition also affects many women and it is caused as a result of both genetics and hormones.
Women can inherit different genes which make their hair more prone to a process in which hair follicles shrink from thick healthy hairs to thin friable hairs. This is known as miniaturisation.
The actual process is driven by the hormone testosterone particularly when a woman goes through menopause and her hormone levels change drastically.
The process can also happen earlier in a female’s life (called early female pattern baldness) and this is often due to an underlying condition like Polycystic Ovary Syndrome where the levels of testosterone are higher in the body.
In most cases of female pattern baldness (early or late), this results in diffuse thinning on the top of the head and crown.
Often the frontal hairline, the back and the sides of the head are preserved in this process as the hair follicles are not as sensitive to the hormone changes.
This results in a diffuse central pattern of hair loss commonly associated with this condition.