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Pterygium inversum unguis
Medical condition From Wikipedia, the free encyclopedia
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Pterygium inversum unguis or ventral pterygium is characterized by the adherence of the distal portion of the nailbed to the ventral surface of the nail plate.[3]: 788 The condition may be present at birth or acquired, and may cause pain with manipulation of small objects, typing, and close manicuring of the nail.[3]: 788 secondary due to connective tissue disorders. Pterygium inversum unguis is often asymptomatic.
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Signs and symptoms
Pterygium inversum unguis is often asymptomatic. The most commonly reported symptom amongst those who do experience symptoms is bleeding or pain after clipping the affected nails.[4]
Causes
The cause of pterygium inversum unguis is unknown. Congenital pterygium inversum unguis is assumed to be brought on by an early abnormality in the fetal ridge and groove formation.[5] Idiopathic forms of pterygium inversum unguis may result from the nail bed's distal expansion, which often aids in the creation of the nail plate.[6] Secondary pterygium inversum unguis is thought to be caused by abnormal distal circulation.[7]
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Diagnosis
A prominent hyperkeratotic stratum corneum with normal nail bed vasculature is seen upon histological analysis. It extends and is firmly linked to the underside of the nail plate.[5]
Treatment
The best way to address pterygium inversum unguis is unclear; many approaches, such as topical steroids, keratolytics, and electrocautery-assisted surgical excision, have been shown to be ineffective.[5] Treating the underlying cause of pterygium inversum unguis is the best course of action.[8]
Epidemiology
As of 2014, only 37 cases have been reported in literature.[5] Pterygium inversum unguis most commonly affects women ages 20-70.[4]
See also
References
Further reading
External links
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