:Chondrodermatitis nodularis chronica helicis

The cause of CNCH is unknown. Nonetheless, a number of variables are thought to be involved in the development of CNCH, with the onset being associated with microtrauma, prolonged high pressure, or dermal ischemia.{{cite journal | last1=Sehgal | first1=Virendra N. | last2=Singh | first2=Navjeevan | title=Chondrodermatitis nodularis | journal=American Journal of Otolaryngology | publisher=Elsevier BV | volume=30 | issue=5 | year=2009 | issn=0196-0709 | doi=10.1016/j.amjoto.2008.04.001 | pages=331–336| pmid=19720252 }}

Elastic tissue loss, vascular and connective tissue degradation, and skin and cartilage thinning are all brought on by aging.{{cite journal | last=Dreiman | first=Bernard B. | title=Chondrodermatitis Nodularis Chronica Helicis Treated With Antia-Buch Reconstruction: Review and Case Report | journal=Journal of Oral and Maxillofacial Surgery | publisher=Elsevier BV | volume=65 | issue=7 | year=2007 | issn=0278-2391 | doi=10.1016/j.joms.2005.10.044 | pages=1378–1382}} The onset of CNCH symptoms may be related to the cartilage's increased susceptibility to pressure damage as it ages and loses some of its flexibility. Additionally, older adults typically move less while they sleep, which puts even more pressure on the ear.

Chondrodermatitis nodularis chronica helicis is relatively rare, but it prefers fair-skinned men between the ages of 40 and 80.{{cite journal | last1=Sanu | first1=A | last2=Koppana | first2=R | last3=Snow | first3=D G | title=Management of chondrodermatitis nodularis chronica helicis using a 'doughnut pillow' | journal=The Journal of Laryngology & Otology | publisher=Cambridge University Press (CUP) | volume=121 | issue=11 | date=May 24, 2007 | issn=0022-2151 | doi=10.1017/s0022215107008535 | pages=1096–1098| pmid=17524165 | s2cid=34025503 }}{{cite journal | last1=Yaneza | first1=M M C | last2=Sheikh | first2=S | title=Chondrodermatitis nodularis chronica helicis excision and reconstruction | journal=The Journal of Laryngology & Otology | publisher=Cambridge University Press (CUP) | volume=127 | issue=1 | date=December 7, 2012 | issn=0022-2151 | doi=10.1017/s0022215112002721 | pages=63–64| pmid=23217242 | s2cid=206237570 }} Despite the fact that women are affected by CNCH, the reported male to female ratio is 10 to 1. CNCH usually affects one side of the body, although reports of bilateral lesions have indicated an incidence of 3% to 7%.{{cite journal | last1=Oelzner | first1=Sophia | last2=Elsner | first2=Peter | title=Bilateral chondrodermatitis nodularis chronica helicis on the free border of the helix in a woman | journal=Journal of the American Academy of Dermatology | publisher=Elsevier BV | volume=49 | issue=4 | year=2003 | issn=0190-9622 | doi=10.1067/s0190-9622(03)00482-1 | pages=720–722| pmid=14512925 }} After developing CNCH on the contralateral ear, patients who switch their sleeping side typically develop bilateral lesions.{{cite journal | last1=de Ru | first1=J. A. | last2=Lohuis | first2=P. J. F. M. | last3=Saleh | first3=H. A. | last4=Vuyk | first4=H. D. | title=Treatment of chondrodermatitis nodularis with removal of the underlying cartilage alone: retrospective analysis of experience in 37 lesions | journal=The Journal of Laryngology & Otology | publisher=Cambridge University Press (CUP) | volume=116 | issue=9 | year=2002 | issn=0022-2151 | doi=10.1258/002221502760237939 | pages=677–681| pmid=12437799 | s2cid=22265040 }} Furthermore, CNCH can affect people of any age; cases involving children and teenagers have been documented.

• List of cutaneous conditions

{{reflist}}

• {{cite journal | last1=Ali | first1=Faisal R. | last2=Healy | first2=Ciaran | last3=Mallipeddi | first3=Rajeev | title=Hemorrhoid cushions for chondrodermatitis nodularis helicis (CNH): Piling off the pressure | journal=Journal of the American Academy of Dermatology | publisher=Elsevier BV | volume=75 | issue=2 | year=2016 | issn=0190-9622 | doi=10.1016/j.jaad.2016.03.014 | pages=e65–e66 | pmid=27444092 | ref=none}}
• {{cite journal | last1=Shah | first1=Sheevam | last2=Fiala | first2=Katherine H. | title=Chondrodermatitis nodularis helicis: A review of current therapies | journal=Dermatologic Therapy | publisher=Hindawi Limited | volume=30 | issue=1 | date=October 9, 2016 | issn=1396-0296 | doi=10.1111/dth.12434 | page=e12434 | pmid=27723195 | ref=none| doi-access=free }}

• [https://dermnetnz.org/topics/chondrodermatitis-nodularis DermNet]
• [https://www.ncbi.nlm.nih.gov/books/NBK482507/ StatPearls]

{{Medical resources

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Category:Dermal and subcutaneous growths