2019年5月13日 · Dorsal pterygium occurs when the proximal nail fold fuses with the underlying matrix and, subsequently, with the nail bed. As a result, the nail plate is divided into 2 lateral segments that progressively decrease in size as the pterygium widens.

2022年12月8日 · Dorsal pterygium is seen at the proximal nail fold and ventral pterygium at the hyponychium known as inverse or ventral pterygium. Common causes of the condition include systemic immune disorders, traumatisation, chemical burns and injuries.

Dorsal pterygium is an irreversible nail deformity known to be associated most commonly with trauma, though also with dermatoses affecting the nail matrix like lichen planus, graft versus host disease, or autoimmune bullous disorders.

2022年8月20日 · Dorsal Pterygium affects the upper part of the nails. The forward growth of the proximal nail fold gets blended with the matrix that is underneath the nail bed. As a result, it creates 2 lateral segments on the nail bed dividing the nail plate.

Dorsal pterygium is the growth of a projection of the proximal nail fold that fuses with the underlying matrix and, subsequently, with the nail bed. As a result, the nail plate is divided into 2 lateral segments.

Dorsal pterygium is an irreversible and classic finding in nail lichen planus. The disease may lead to permanent disfigurement, which has both functional and psychological consequences. Early diagnosis and prompt treatment are also important to prevent the development of pterygium.

Pterygium unguis (or dorsal pterygium [1]: 660 ) forms as a result of scarring between the proximal nailfold and matrix, with the classic example being lichen planus, though it has been reported to occur as a result of sarcoidosis and Hansen's disease.

2020年10月29日 · This leads to a skin bridge (pterygium, wing skin) and to a division of the nail plate into 2 (or more, see figure). The consequences are partial or complete nail loss(anonychia). The pterygium is observed in the following diseases: lichen planus; Systemic Scleroderma; Systemic lupus erythematosus; Burns; Mechanical traumas; epidermolysis bullosa

The “dorsal pterygium” occurs when the proximal nail fold fuses with the matrix and secondary to the nail bed. The “ventral pterygium” is a distal extension of the hyponychial tissue, which anchors to the undersurface of the nail, thereby eliminating the distal groove.

Pterygium unguis or dorsal pterygium, scarring between the proximal nail fold and matrix. [2] A pterygium reduces vision in several ways: Distortion of the corneal optics. This begins usually when the pterygium is greater than 2mm from the corneal limbus. Disruption of the tear. The tear film is the first lens in the eye.