<unk>  (also known as "Twisted hairs") is characterized by short and brittle hairs that appear flattened and twisted when viewed through a microscope. This phenotype is noted in Menkes disease, and Lichen Planopilaris<unk>  can also occur after use of retinoids, such as isotretinoin
Pili torti
Pili bifurcati
Dens evaginatus
Pili multigemini
Dens invaginatus
Galactocele
Deer penis
Pili pseudoannulati