Let's start by talking about one of the most common causes of hair loss, especially at the edges around the face: traction alopecia
This is a fancy name for hair fall due to physical stress and pulling on the hair strands. It's usually associated with hair styles that involve tight braids or ponytails, weaves, extensions and anything else that pulls at the hair.
All this pulling not only yanks a lot of hair out, but the hair that remains can develop inflammation around the roots. Once that happens the roots shut down on their hair producing process.