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
Read article at Wikipedia
Nystagmus
Medicine
Symptom of:
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
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 (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 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 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...