When do we talk about pathological hair loss or alopecia?
Alopecia is the most common hair growth disorder where over 100-150 hairs are lost daily.
A hair is renewed within the hair follicle, 20-25 times during the person's life.
The Life Phases of Hair
Anagen Phase: Active phase of intense cell proliferation and growth.
90% of hair follicles are normally in this phase.
Its duration is 3-6 years.
Congenital Phase: Variable phase of cessation of mitotic activity.
1% of hair follicles are normally in this phase.
Its duration is 2-3 weeks.