Figure 2: Rare hair shaft abnormalities. (a) Trichorhexis invaginata in a patient with Comèl-Netherton syndrome. Clinically hair appears sparse, brittle, and short; trichoscopy shows nodes along the hair shafts (white arrows). (b) Pili multigemini on the back. Dermoscopy highlighting the multiple hair shafts emerging from the same follicular ostia. Dermlite II Pro (3 Gen, San Juan Capistrano, CA, USA).