Trichorrhexis nodosa

Trichorrhexis nodosa is a defect in the hair shaft characterized by thickening or weak points (nodes) that cause the hair to break off easily.:766:636 This group of conditions contributes to the appearance of hair loss, lack of growth, and damaged-looking hair. Trichorrhexis nodosa is a defect in the hair shaft characterized by thickening or weak points (nodes) that cause the hair to break off easily.:766:636 This group of conditions contributes to the appearance of hair loss, lack of growth, and damaged-looking hair.