Purpose: To describe a patient with eyelash loss as the presenting feature of hyperthyroidism.
Methods: Case report.
Results: A 19-year-old woman presented with right upper eyelid eyelash loss. Thyroid function studies confirmed hyperthyroidism. She subsequently lost further eyelashes and a patch of scalp hair. Once the hyperthyroidism was treated, the eyelashes and scalp hair regrew.
Conclusions: Eyelash loss may be an early sign of the hyperthyroid state.