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Defining the characteristics of Senescent Alopecia
| Scalp-wide reduction in the number of hairs |
| Occurs between the ages of 50 and 80 years |
| No prior history of hair thinning or underlying scalp disease |
| Presence of follicular miniaturization is inconsistent |
| Shortening of anagen |
| Decreased anagen/telogen ratio |
| Relation to androgens has yet to be determined.(low androgen levels could be a factor) |
