Short Anagen Hair Syndrome
A healthy Hispanic 3-year-old girl presented with a history of short hair since birth. The mother reported that there was excessive shedding and poor hair growth, and that the girl had never needed a haircut. Family history was negative for hair loss or hair diseases. Aggravating factors were denied and the past medical history was uneventful. Upon examination the patient was well- developed and did not present any abnormality except for short, dark, and thin hair [Figures and ]. The pull test was positive. Body hair was normal, as was the rest of the physical examination.\nDermoscopy of pulled hairs showed 4.7 cm long telogen hairs with tipped points, which indicates that the hair had never been cut. A diagnosis of SAS was established through clinical and dermoscopic parameters.