在国外网站上看到的,udpa更惨,开始时跟dpa相似，头顶脱光光，之后后面也稀疏，因为没有供发区头发移植都没门.
diffuse patterned and unpatterned alopecia
two other types of genetic hair loss in men not often considered by doctors, “diffuse patterned alopecia” and “diffuse unpatterned alopecia,” pose a significant challenge both in diagnosis and in patient management. understanding these conditions is crucial to the evaluation of hair loss in both men and women, particularly those that are young when the diagnoses may be easily missed, as they may indicate that a patient is not a candidate for surgery. (bernstein and rassman “follicular transplantation: patient evaluation and surgical planning”)
diffuse patterned alopecia (dpa) is an androgenetic alopecia manifested as diffuse thinning in the front, top and crown, with a stable permanent zone. in dpa, the entire top of the scalp gradually miniaturizes (thins) without passing through the typical norwood stages. diffuse unpatterned alopecia (dupa) is also androgenetic, but lacks a stable permanent zone and affects men much less often than dpa. dupa tends to advance faster than dpa and end up in a horseshoe pattern resembling the norwood class vii. however, unlike the norwood vii, the dupa horseshoe can look almost transparent due to the low density of the back and sides. differentiating between dpa and dupa is very important because dpa patients often make good transplant candidates, whereas dupa patients almost never do, as they eventually have extensive hair loss without a stable zone for harvesting. |
发表于 2008-9-21 19:46:42
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