POSTPARTUM HAIR LOSS:
Follicles, which are tiny pores in the skin on your scalp, are where hair grows. The hair grows and sheds incessantly. There are three stages to this hair growth cycle that you will experience again in your lifetime:
The phase of active hair growth is called the anagen phase. It may continue for two to six years. At any given time, 85% to 90% of your hair is in this phase.
The hair follicles shrink during the brief catagen phase, which is a transitional stage.
The three months or so that make up the telogen phase are a resting phase. The hair then falls out after the follicle releases it. Telogen effluvium is another name for postpartum hair loss.
Many hairs in the growing phase (anagen) abruptly transition into the resting phase (telogen) due to pregnancy hormones. You lose that hair a few months later.
On average, scalp contains 80,000–120,000 hairs, and it may lose up to 100 of them every day. It lose over 100 hairs a day if you have postpartum hair loss.