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5 Facts you should know about
Alopecia areata
1
Approximately 2% of the global population suffer from AA over the course of their lifetime.
2
It can affect all age groups, but typically occurs by age 40.
3
It affects people of various racial and ethnic backgrounds.
4
The pathophysiology involves multiple immune effector cells, including CD8+ T cells and natural killer cells.
5
The inflammation around the hair follicle is driven by inflammatory cytokines, which may lead to hair loss.
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