Hair loss is a disorder that usually occurs mostly in the scalp region and Is caused by a disruption in how your hair normally grows and falls out.
The scalp has around 100,000 hairs in total. Each hair goes through a cycle of growing, resting, shedding, and regenerating.
There are 3 phases in the hair growth cycle including anagen phase, catagen phase and telogen phase. In the first growing phase, the hair can get quite long over the years. In the second phase, the growth stops and the hair starts loosening in the follicle. In the third resting phase, the hair detaches fully and falls out.
Then a new hair begins growing in the same follicle, starting the cycle again. If something disrupts that last shedding phase, like stress or injury, it can make hair fall out faster than new hair can grow back in. This excessive shedding is called telogen effluvium and can lead to noticeable hair loss.
Both telogen effluvium and androgenic alopecia can cause you to lose hair or see thinning. However, telogen effluvium typically consists of more temporary hair loss, while androgenic alopecia is permanent and typically develops as a receding hairline or bald patch.


