What is the technical term for knotted hair?

What is the technical term for knotted hair?

• A. Trichorehexis Nodosa
• B. Trichorhexis Nodosa
• C. Trichorrehexis Nodosa
• D. Trichoptilosis

Answer: (C)

Knotted hair is a hair shaft disorder where the fiber develops nodular thickenings and tends to break at those points. The term that names this exactly is trichorrhexis nodosa. Here, tricho- means hair, rrhexis denotes rupture or fracture, and nodosa indicates the nodular deformities along the shaft. This combination specifically describes the structural weakness and knot-like nodes along the hair, which is why it’s the best fit for knotted hair. The other spellings are variants or refer to a different issue: trichoptilosis means split ends, which are surface damage rather than the internal rupture with nodules.

Knotted hair is a hair shaft disorder where the fiber develops nodular thickenings and tends to break at those points. The term that names this exactly is trichorrhexis nodosa. Here, tricho- means hair, rrhexis denotes rupture or fracture, and nodosa indicates the nodular deformities along the shaft. This combination specifically describes the structural weakness and knot-like nodes along the hair, which is why it’s the best fit for knotted hair. The other spellings are variants or refer to a different issue: trichoptilosis means split ends, which are surface damage rather than the internal rupture with nodules.