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Kinking hair

Kinking hair
Other namesAcquired progressive kinking of hair
SpecialtyDermatology

Kinking hair, or acquired progressive kinking of hair, is a skin condition primarily reposted in postpubescent males with androgenetic alopecia, presenting with gradual curling and darkening of the frontal, temporal, auricular, and vertex hairs which, under the microscope, show kinks and twists with or without longitudinal grooving.[1]: 647 [2]: 767 [3]

Signs and symptoms

Kinking hair is characterized by acquired curling of the hair. The hair might appear frizzy or lusterless. Increased hair shedding is usually the most problematic symptom.[3]

Causes

The cause of hair kinking remains a mystery.[4] It has been suggested as a potential mechanism that hair kinking is a hair cycle disease associated with dysregulation in the inner root sheath of the hair bulb and the shortening of anagen hairs.[5]

Diagnosis

The diagnostic criteria for kinking hair is as follows:[5]

  1. an acquired, bounded patch of woolly, dull hair in the frontal, temporal, or parietal regions that is not associated with prior trauma. Hair that is twisted, tortuous, and uneven, with the initial twist showing 2-4 cm after the hair emerges.[5]
  2. A periodic decline in the diameter of the hair shaft, observed under optical microscopy, with flattened and expanded sections alternating.[5]
  3. A spindle-shaped widening with sporadic fractures, a partial twisting of the hair on its longitudinal axis with a 180-degree rotation, and an increased number of cuticular cells per diameter in the twisted sections were observed using scanning electron microscopy.[5]

See also

References

  1. ^ Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
  2. ^ James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
  3. ^ a b Tosti A, Piraccini BM, Pazzaglia M, Misciali C (October 1999). "Acquired progressive kinking of the hair: clinical features, pathological study, and follow-up of 7 patients". Arch Dermatol. 135 (10): 1223–6. doi:10.1001/archderm.135.10.1223. PMID 10522670.
  4. ^ Civas, Ekrem; Demirci, Gulsen Tukenmez (2021-03-23). "Rapid onset acquired progressive kinking of the hair: Scanning electron microscopic findings in a woman". Indian Journal of Dermatology, Venereology and Leprology. 87. Scientific Scholar: 281–284. doi:10.25259/ijdvl_677_20. ISSN 0378-6323. PMID 33769738.
  5. ^ a b c d e Balsa, Raúl E.; Ingratta, Stella Maris; Alvarez, Alberto G. (1986). "Acquired kinking of the hair: A methodologic approach". Journal of the American Academy of Dermatology. 15 (5). Elsevier BV: 1133–1136. doi:10.1016/s0190-9622(86)70281-8. ISSN 0190-9622. PMID 3771867.

Further reading
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