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. : 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. : 788  secondary due to connective tissue disorders

See also
Pterygium unguis
Nail
List of cutaneous conditions


== References ==
Treatment
The treatment for vestibular neuritis depends on the cause. However, symptoms of vertigo can be treated in the same way as other vestibular dysfunctions with vestibular rehabilitation. Physical therapy
Typical treatments include combinations of head and eye movements, postural changes, and walking exercises. Specifically, exercises that may be prescribed include keeping eyes fixated on a specific target while moving the head, moving the head right to left at two targets at a significant distance apart, walking while keeping eyes fixated on a specific target, and walking while keeping eyes fixated on a specific target while also turning the head in different directions. The main function behind repeating a combination of head and eye movements, postural changes and walking is that through this repetition, compensatory changes for the dysfunctions arising from peripheral vestibular structures may be promoted in the central vestibular system (brainstem and cerebellum).Vestibular rehabilitation therapy is a highly effective way to substantially reduce or eliminate residual dizziness from labyrinthitis. VRT works by causing the brain to use already existing neural mechanisms for adaptation, neuroplasticity, and compensation. Vestibular neuritis rehabilitation is an effective and safe management to improve symptoms. The vestibular neuritis rehabilitation can improve symptoms or resolve the symptoms which is dependent on each individual. Rehabilitation strategies most commonly used are:
Gaze stability exercises – moving the head from side to side while fixated on a stationary object (aimed at assisting the eye to fixate during head rotation without the input from the lost canal vestibulo–ocular reflex).