January 2022 in “Clinical Cases in Dermatology” The girl's hair loss is due to trichotillomania, which may improve with behavioral therapy or a combination of treatments.
January 2020 in “Open Journal of Obstetrics and Gynecology” All women with Polycystic Ovary Syndrome (PCOS) in a study had at least one skin disorder, with the most common being excessive hair growth, acne, dark skin patches, hair loss, and oily skin.
June 2021 in “Aesthetic Surgery Journal” PRP improves hair growth in AGA, but higher concentrations aren't significantly better than lower ones.