Autosomal recessive hypotrichosis
Last updated 18 Aug 2020
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Autosomal recessive hypotrichosis is a condition that affects hair growth. People with this condition have sparse hair (hypotrichosis) on the scalp beginning in infancy. This hair is usually coarse, dry, and tightly curled (often described as woolly hair). Scalp hair may also be lighter in colour than expected and is fragile and easily broken. Affected individuals often cannot grow hair longer than a few inches. The eyebrows, eyelashes, and other body hair may be sparse as well. Over time, the hair problems can remain stable or progress to complete scalp hair loss (alopecia) and a decrease in body hair.
Description
Autosomal recessive hypotrichosis is a condition that affects hair growth. People with this condition have sparse hair (hypotrichosis) on the scalp beginning in infancy. This hair is usually coarse, dry, and tightly curled (often described as woolly hair). Scalp hair may also be lighter in colour than expected and is fragile and easily broken. Affected individuals often cannot grow hair longer than a few inches. The eyebrows, eyelashes, and other body hair may be sparse as well. Over time, the hair problems can remain stable or progress to complete scalp hair loss (alopecia) and a decrease in body hair.
Rarely, people with autosomal recessive hypotrichosis have skin problems affecting areas with sparse hair, such as redness (erythema), itchiness (pruritus), or missing patches of skin (erosions) on the scalp. In areas of poor hair growth, they may also develop bumps called hyperkeratotic follicular papules that develop around hair follicles, which are specialized structures in the skin where hair growth occurs.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal recessive. More than one pattern can apply in different cases.
Related genes
Other names
AH
Autosomal recessive localized hypotrichosis
Autosomal recessive woolly hair with or without hypotrichosis
HTL
Hypotrichoses
Hypotrichosis
LAH
Total hypotrichosis, Mari type
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Further reading and references
- Autosomal recessive hypotrichosis; MedlinePlus, National Library of Medicine.
- Azeem Z, Jelani M, Naz G, Tariq M, Wasif N, Kamran-Ul-Hassan Naqvi S, Ayub M, Yasinzai M, Amin-Ud-Din M, Wali A, Ali G, Chishti MS, Ahmad W. Novel mutations in G protein-coupled receptor gene (P2RY5) in families with autosomal recessive hypotrichosis (LAH3). Hum Genet. 2008 Jun;123(5):515-9. doi: 10.1007/s00439-008-0507-7. Epub 2008 May 7.
- Horev L, Tosti A, Rosen I, Hershko K, Vincenzi C, Nanova K, Mali A, Potikha T, Zlotogorski A. Mutations in lipase H cause autosomal recessive hypotrichosis simplex with woolly hair. J Am Acad Dermatol. 2009 Nov;61(5):813-8. doi: 10.1016/j.jaad.2009.04.020. Epub 2009 Sep 18.
- Khan S, Habib R, Mir H, Umm-e-Kalsoom, Naz G, Ayub M, Shafique S, Yamin T, Ali N, Basit S, Wasif N, Kamran-Ul-Hassan Naqvi S, Ali G, Wali A, Ansar M, Ahmad W. Mutations in the LPAR6 and LIPH genes underlie autosomal recessive hypotrichosis/woolly hair in 17 consanguineous families from Pakistan. Clin Exp Dermatol. 2011 Aug;36(6):652-4. doi: 10.1111/j.1365-2230.2011.04014.x. Epub 2011 Mar 21.
- Kurban M, Wajid M, Shimomura Y, Christiano AM. Mutations in LPAR6/P2RY5 and LIPH are associated with woolly hair and/or hypotrichosis. J Eur Acad Dermatol Venereol. 2013 May;27(5):545-9. doi: 10.1111/j.1468-3083.2012.04472.x. Epub 2012 Mar 5.
- Schaffer JV, Bazzi H, Vitebsky A, Witkiewicz A, Kovich OI, Kamino H, Shapiro LS, Amin SP, Orlow SJ, Christiano AM. Mutations in the desmoglein 4 gene underlie localized autosomal recessive hypotrichosis with monilethrix hairs and congenital scalp erosions. J Invest Dermatol. 2006 Jun;126(6):1286-91. doi: 10.1038/sj.jid.5700237.
- Shimomura Y, Wajid M, Petukhova L, Shapiro L, Christiano AM. Mutations in the lipase H gene underlie autosomal recessive woolly hair/hypotrichosis. J Invest Dermatol. 2009 Mar;129(3):622-8. doi: 10.1038/jid.2008.290. Epub 2008 Oct 2.
- Shimomura Y. Congenital hair loss disorders: rare, but not too rare. J Dermatol. 2012 Jan;39(1):3-10. doi: 10.1111/j.1346-8138.2011.01395.x. Epub 2011 Nov 2.
- Shinkuma S, Akiyama M, Inoue A, Aoki J, Natsuga K, Nomura T, Arita K, Abe R, Ito K, Nakamura H, Ujiie H, Shibaki A, Suga H, Tsunemi Y, Nishie W, Shimizu H. Prevalent LIPH founder mutations lead to loss of P2Y5 activation ability of PA-PLA1alpha in autosomal recessive hypotrichosis. Hum Mutat. 2010 May;31(5):602-10. doi: 10.1002/humu.21235.
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