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5 Facts you should know about

Alopecia areata

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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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