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Hirsutism & Virilization

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Hair Growth Cycle<br />

1. Growth phase: Anagen.<br />

2. Rapid involution and shedding phase: Catagen.<br />

3. Quiescent phase: Telagen.<br />

• The length of the hair is determined by the<br />

duration of anagen.<br />

• This is longest in scalp hair (3 years) and<br />

shortest in forearm hair.

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