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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 ...
Exterior of labyrinth of the inner ear. Benign paroxysmal positional vertigo ( BPPV) is a disorder arising from a problem in the inner ear. [ 3] Symptoms are repeated, brief periods of vertigo with movement, characterized by a spinning sensation upon changes in the position of the head. [ 1] This can occur with turning in bed or changing ...
Parinaud's oculoglandular syndrome. Parinaud's oculoglandular syndrome (POS) is a medical condition characterized by a specific set of symptoms affecting the eye and nearby lymph nodes. Named after the French ophthalmologist Henri Parinaud, it should not be confused with the neurological syndrome caused by a lesion in the midbrain which is also ...
Specialty. Neurology. Intention tremor is a dyskinetic disorder characterized by a broad, coarse, and low-frequency (below 5 Hz) tremor evident during deliberate and visually-guided movement (hence the name intention tremor). An intention tremor is usually perpendicular to the direction of movement. When experiencing an intention tremor, one ...
The ruins include friezes with images of cats, the claws of a reptile, and a human body with the head of a bird.The designs are preserved in “fine plaster,” which has helped scientists nail ...
Common symptoms of a snake bite include: Severe pain, tenderness, and swelling. Bleeding and fang marks on the skin. Seizures. Numbness and tingling. Blurry vision. A taste of metal, mint, or ...
0.3–1.9 per 1,000 [ 1] Ménière's disease ( MD) is a disease of the inner ear that is characterized by potentially severe and incapacitating episodes of vertigo, tinnitus, hearing loss, and a feeling of fullness in the ear. [ 3][ 4] Typically, only one ear is affected initially, but over time, both ears may become involved. [ 3]
Many cats become paralyzed because of traumatic injuries, such as a hard fall or being hit by a car. Cats can also experience a type of blood clot called “Saddle thrombus,” which blocks blood ...