Loose Anagen Hair Syndrome: A Case Study of a 6-Year-Old Girl

A 6-year-old girl with a history of hair that would not grow past her jawline was diagnosed with Loose Anagen Hair Syndrome (LAHS), a condition characterized by easily shed anagen hairs, a ruffled proximal cuticle, absent inner root sheath, and misshapen hair bulbs. The syndrome, which can be familial or sporadic, is believed to result from improper cornification of the inner root sheath, leading to poor anchoring of the hair. LAHS is categorized into three subtypes based on hair appearance and can affect any ethnicity or hair type, though it predominantly occurs in blonde female children. There is no evidence supporting the use of biotin for this condition, but some improvement may occur with age. The patient's hair pull test resulted in the painless removal of over 40 hairs, supporting the diagnosis.