D P A  (Diffuse Patterned Alopecia)

D U P A (Diffuse Unpatterned Alopecia)

Whereas in many who suffer androgen related alopecias, the advancement accedes to the Norwood-Hamilton scale other forms of the alopecia may introduce confusion as to the validity of transplanting techniques.

Diffuse Patterned Alopecia (androgenetic) - presents as a diffuse often inexorable follicle miniaturisation process causing hair density reduction at the Anterior, Central and Posterior Vertices which does not equate with the established Norwood-Hamilton classification. The Occipital Region however is usually unaffected and therefore serves as a donor site from which donor follicles may be harvested for transplantation.

Diffuse Un-patterned Alopecia (androgenic) also presents as a miniaturisation and eventual loss of hair-bearing follicles over the entire scalp including the occipital region which renders the subject unsuitable for hair transplantation procedures.

Correct differential diagnosis is therefore essential.


Prof. Barry Stevens FTTS

The President 2016-2018

Dr Janet Palin


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