Nystagmus

Pathologic nystagmus is a form of involuntary eye movement. It is characterized by alternating smooth pursuit in one direction and saccadic movement in the other direction. When nystagmus occurs without filling its normal function, it is pathologic (deviating from the healthy or normal condition). Pathological nystagmus is the result of damage to one or more components of the vestibular system, including the semicircular canals, otolith organs, a... more
top ↑

We can also tell you Nystagmus is a…

If you know more about Nystagmus, you can add more facts here »

Similar topics in Freebase

  • Raynaud's phenomenon

    Raynaud's phenomenon

    In medicine, Raynaud's phenomenon (pronounced /reɪˈnoʊz/, us dict: rā·nōz′) is a vasospastic disorder causing discoloration of the fingers, toes, and occasionally other extremities. This condition can also cause nails to become brittle with longitudinal ridges. Named for French physician Maurice...
  • Internuclear ophthalmoplegia

    Internuclear ophthalmoplegia

    Internuclear ophthalmoplegia (INO) is a medical sign indicative of a particular cause of extraocular muscle weakness (ophthalmoparesis). It can affect either one or both eyes. It is a disorder of conjugate lateral gaze in which the affected eye shows impairment of adduction. When the partner eye is...
  • Uveitis

    Uveitis

    Uveitis specifically refers to inflammation of the middle layer of the eye, termed the "uvea" but in common usage may refer to any inflammatory process involving the interior of the eye. Uveitis is estimated to be responsible for approximately 10% of the blindness in the United States. Uveitis...
  • Sensorineural hearing loss

    Sensorineural hearing loss

    Sensorineural hearing loss is a type of hearing loss in which the root cause lies in the vestibulocochlear nerve (Cranial nerve VIII), the inner ear, or central processing centers of the brain. The Weber test, in which a tuning fork is touched to the head, localizes to the normal ear in people with...
  • Dizziness

    Dizziness refers to an impairment in spatial perception and stability. It is considered imprecise. It can be used to mean vertigo, presyncope, disequilibrium, or for a non-specific feeling such as giddiness or foolishness.
  • Fasciculation

    A fasciculation (fah SIK yoo lay shun) (or "muscle twitch") is a small, local, involuntary muscle contraction (twitching) visible under the skin arising from the spontaneous discharge of a bundle of skeletal muscle fibers. Fasciculations have a variety of causes, the majority of which are benign,...
  • Tremor

    A tremor is an unintentional, somewhat rhythmic, muscle movement involving to-and-fro movements (oscillations) of one or more body parts. It is the most common of all involuntary movements and can affect the hands, arms, head, face, vocal cords, trunk, and legs. Most tremors occur in the hands. In...
  • Lhermitte's sign

    Lhermitte's Sign, sometimes called the Barber Chair phenomenon, is an electrical sensation that runs down the back and into the limbs from involvement of the posterior columns, and is produced by bending the neck forward or backward. The sign suggests a lesion of the dorsal columns of the cervical...
  • Paresthesia

    Paresthesia (/ˌpærɨsˈθiːziə/ or pronounced /ˌpærɨsˈθiːʒə/, spelled Paraesthesia in British English) is a sensation of tingling, pricking, or numbness of a person's skin with no apparent long-term physical effect. It is more generally known as the feeling of "pins and needles" or of a limb "falling...
  • Papillitis

    Papillitis is the term for a specific type of optic neuritis. If ocular inflammation is restricted to the optic nerve head the condition is called papillitis (or intraocular optic neuritis), and if it is located in the orbital portion of the nerve it is called retrobulbar optic neuritis (or orbital...

These people have edited this topic:

Edit this topic
Edit and Show details

Add or delete facts, download data in JSON or RDF formats, and explore topic metadata.

Freebase Logo
What is Freebase?

Freebase is a huge collection of facts, built by people like you. Freebase connects facts in ways other sites can't, giving you new ways to explore millions of subjects.
You can help improve it!

Freebase Attribution

Freebase data is free for use under the CC-BY license.

The original description for Nystagmus was automatically generated from Wikipedia.org licensed under the GNU Free Documentation License.
[1]
Learn more about Freebase licensing and attribution