Miscellaneous Disorders
November 2009
TLDR Trichorrhexis nodosa causes hair to break easily, often affecting young to middle-aged black women.
The document discussed various hair disorders categorized under miscellaneous disorders, including trichorrhexis nodosa, trichotillomania, and loose anagen syndrome. It highlighted trichorrhexis nodosa, characterized by nodes in the hair shaft resembling "broomsticks," which break easily. This condition was frequently observed in young to middle-aged black women, with nodes typically located 2–4 cm from the scalp, resulting in hair breakage at that length. In white patients, nodes were found more distally, leading to "split end" appearances. Other hair-related conditions mentioned were telogen effluvium, alopecia areata, Netherton syndrome, Menkes kinky hair syndrome, and tinea capitis, which were related to other conditions in the book.