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Nystagmus as seen in a case of ocular albinism. The cause of pathological nystagmus may be congenital, idiopathic, or secondary to a pre-existing neurological disorder.It also may be induced temporarily by disorientation (such as on roller coaster rides or when a person has been spinning in circles) or by some drugs (alcohol, lidocaine, and other central nervous system depressants, inhalant ...
Vestibulocerebellar syndrome. Vestibulocerebellar syndrome, also known as vestibulocerebellar ataxia, is a progressive neurological disorder that causes a variety of medical problems. Initially symptoms present as periodic attacks of abnormal eye movements but may intensify to longer-lasting motor incapacity. The disorder has been localized to ...
Noonan syndrome ( NS) is a genetic disorder that may present with mildly unusual facial features, short height, congenital heart disease, bleeding problems, and skeletal malformations. [ 1] Facial features include widely spaced eyes, light-colored eyes, low-set ears, a short neck, and a small lower jaw. [ 1]
Episodic ataxia ( EA) is an autosomal dominant disorder characterized by sporadic bouts of ataxia (severe discoordination) with or without myokymia (continuous muscle movement). There are seven types recognized but the majority are due to two recognized entities. [ 1] Ataxia can be provoked by psychological stress or startle, or heavy exertion ...
Pendular nystagmus is a sinusoidal oscillation, which refers to the waveform of involuntary eye movements that may occur in any direction. [1] It is characterized by the multidimensional slow eye movements of the eyes (1 Hz frequency) with an equal velocity in each direction that resembles the trajectory of a pendulum . [ 2 ]
The superior semicircular canal dehiscence syndrome ( SSCDS) is a set of hearing and balance symptoms that a rare disease/disorder of the inner ear 's superior semicircular canal/duct induces. [ 3][ 4][ 5] The symptoms are caused by a thinning or complete absence of the part of the temporal bone overlying the superior semicircular canal of the ...
Infantile esotropia is an ocular condition of early onset in which one or either eye turns inward. It is a specific sub-type of esotropia and has been a subject of much debate amongst ophthalmologists with regard to its naming, diagnostic features, and treatment.
In her new book, “ Kids Thrive at Every Size ,” Castle aims to offer a new model for assessing and addressing kids’ health. Kids with bodies either larger or smaller than average are at ...