TLDR Not all cases with typical signs of Alopecia Areata are actually diagnosed as such.
A cross-sectional study of 113 patients with typical manifestations of Alopecia Areata (AA) was conducted to study the histopathological diagnosis of AA and compare the histopathology between acute and chronic AA. Out of the 113 patients, 109 (96.5%) were pathologically diagnosed with AA, while others were diagnosed with lichen planopilaris, lupus panniculitis, and unspecified scarring alopecia. The study found that acute AA had a significantly higher percentage of terminal telogen hairs and vellus hairs, while chronic AA had a significantly higher number of follicular streamers and nanogen hairs. The study concluded that typical manifestations of AA are not always diagnosed as AA.
February 2023 in “Siriraj Medical Journal” Not all cases with typical signs of Alopecia Areata are actually diagnosed as such.
1 citations,
June 2022 in “PubMed” Alopecia causes hair loss and should be treated early, especially scarring types where hair cannot regrow.
August 2018 in “Oxford University Press eBooks” The document's conclusion cannot be provided because the document cannot be parsed.
November 2016 in “대한피부과학회지” The document's conclusion cannot be summarized as it is not provided in a language I can understand.
January 2015 in “프로그램북(구 초록집)” 
43 citations,
August 2013 in “Pediatric Dermatology” Trichoscopy is good for diagnosing and monitoring hair and scalp problems in children but needs more research for certain conditions.
July 2013 in “DeckerMed Medicine” The document's conclusion cannot be provided because the document is not readable or understandable.
28 citations,
September 1998 in “Medical Clinics of North America” Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.
