Classification

Classification attempts to quantify vitiligo have been analyzed as being somewhat inconsistent while recent consensus have agreed to a system of segmental vitiligo (SV) and non-segmental vitiligo (NSV).

 

Non-segmental

 

In non-segmental vitiligo (NSV), there is usually some form of symmetry  the location of the patches of depigmentation. New patches also appear over time and can be generalized over large portions of the body or localized to a particular area. Vitiligo where little pigmented skin remains is referred to as vitiligo universalis. NSV can come about at any age (unlike segmental vitiligo, which is far more prevalent in teenage years)

 

Classes of non-segmental vitiligo include the following:

 

  • Generalized Vitiligo: the most common pattern, wide and randomly distributed areas of depigmentation
  • Universal Vitiligo: depigmentation encompasses most of the body
  • Focal Vitiligo: one or a few scattered macules in one area, most common in children
  • Acrofacial Vitiligo: fingers and periorificial areas
  • Mucosal Vitiligo: depigmentation of only the mucous membranes

Segmental

 

Segmental vitiligo (SV) differs in appearance, cause and prevalence from associated illnesses. Its treatment is different from that of NSV. It tends to affect areas of skin that are associated with dorsal roots from the spinal cord and is most often unilateral. It spreads much more rapidly than NSV and, without treatment, it is much more stable/static in course and is not associated with auto-immune diseasesSV is a very treatable condition that responds to topical treatment