{{Short description|Ridges or splits in the fingernail or toenail}} {{See also|Onychoschizia}} {{Infobox medical condition (new) | name = Onychorrhexis | synonyms = Brittle nails | image = Onicorrexis in a adult.jpg | caption = Onychorrexis in an adult | pronounce = | field = | symptoms = | complications = | onset = | duration = | types = | causes = | risks = | diagnosis = | differential = | prevention = | treatment = | medication = | prognosis = | frequency = | deaths = }}
'''Onychorrhexis''' (from the Greek words ὄνυχο- ''ónycho-'', "nail" and ῥῆξις ''rhexis'', "bursting"), is a brittleness with breakage of finger or toenails that may result from hypothyroidism, anemia, anorexia nervosa or bulimia, or after oral retinoid therapy.<ref name="Andrews">James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology''. (10th ed.). Saunders. {{ISBN|0-7216-2921-0}}.</ref>{{rp|786}} It can also be seen in melanoma that involves the nail and onychomycosis.<ref name="Frazier AAFP 10/2021">{{cite journal |last1=Frazier |first1=Winfred Taylor |last2=Santiago-Delgado |first2=Zuleica M. |last3=Kenneth C. Stupka |first3=I. I. |title=Onychomycosis: Rapid Evidence Review |journal=American Family Physician |date=October 2021 |volume=104 |issue=4 |pages=359–367 |url=https://www.aafp.org/pubs/afp/issues/2021/1000/p359.html |issn=1532-0650}}</ref>
Onychorrhexis affects up to 20% of the population.<ref name="Andrews" />{{rp|786}}<ref name="Bolognia">{{cite book |author=Rapini, Ronald P. |author2=Bolognia, Jean L. |author3=Jorizzo, Joseph L. |title=Dermatology: 2-Volume Set |publisher=Mosby |location=St. Louis |year=2007 |isbn=978-1-4160-2999-1 }}</ref>
==See also== *Nail anatomy *List of cutaneous conditions
==References== {{reflist}}
== Further reading == * {{cite journal | last1=Abdullah | first1=Lina | last2=Abbas | first2=Ossama | title=Common nail changes and disorders in older people: Diagnosis and management | journal=Canadian Family Physician | publisher=College of Family Physicians of Canada | volume=57 | issue=2 | date=2024-03-14 | pages=173–181 | pmid=21321168 | pmc=3038811 | ref=none}} * {{cite journal | last1=Singal | first1=Archana | last2=Arora | first2=Rahul | title=Nail as a window of systemic diseases | journal=Indian Dermatology Online Journal | publisher=Medknow | volume=6 | issue=2 | year=2015 | pages=67–74 | issn=2229-5178 | doi=10.4103/2229-5178.153002 | doi-access=free | pmid=25821724 | pmc=4375768 | ref=none}}
== External links == * [https://www.webmd.com/skin-problems-and-treatments/what-to-know-about-onychorrhexis WebMD] * [https://www.visualdx.com/visualdx/diagnosis/onychorrhexis?diagnosisId=54935&moduleId=19 VisualDx]
{{Medical resources | ICD11 = {{ICD11|EE13.0}} | ICD10 = {{ICD10|L60.3}} | ICD10CM = <!-- {{ICD10CM|Xxx.xxxx}} --> | ICD9 = <!-- {{ICD9|xxx}} --> | ICDO = | OMIM = | MeshID = | DiseasesDB = 33353 | SNOMED CT = 85136002 | Curlie = | MedlinePlus = | eMedicineSubj = | eMedicineTopic = | PatientUK = | NCI = | GeneReviewsNBK = | GeneReviewsName = | NORD = | GARDNum = | GARDName = | RP = | AO = | WO = | OrthoInfo = | Orphanet = | Scholia = Q7095163 | OB = }}
{{Disorders of skin appendages}}
Category:Conditions of the skin appendages
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