A school-aged girl presented to the dermatology clinic with a 6-year history of hair loss and short hair, and light microscopy of scalp hair shafts revealed no structural abnormalities, such… Click to show full abstract
A school-aged girl presented to the dermatology clinic with a 6-year history of hair loss and short hair, and light microscopy of scalp hair shafts revealed no structural abnormalities, such as cuticular damage, twisting, bending, or miniaturization. What is the diagnosis?
               
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