Scarring alopecia

Alopecia areata

 

This is also called spot baldness, and it is an autoimmune disease in which hair is lost from an area of the body most especially from the scalp due to the inability of the body to recognise its own tissue and thereby autolysing tthem. It may present in three stages

  • Alopeia areata - affecting a part of the body

  • Alopecia totalis - affecting all parts of scalp

  • Alopecia universalis - affecting entire skin 

There are  two types of alopecia pathologically

  • 1 scarring alopecia in which there is fibrosis and ilnflammation, to include loss of hair follicles

  • 2 non scarrign alopecia in which the hair shafts are gone but the  hair follicles are preserved. It is a reversible alopecia.


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