| rotatory | 1. Turning as on an axis; rotary. 2. Going in a circle; following in rotation or succession; as, rotatory assembles. 3. <optics> Producing rotation of the plane of polarization; as, the rotatory power of bodies on light. See the Note under polarization. Origin: Cf. F. Rotatoire. See Rotate, Rotary. <zoology> A rotifer. Source: Websters Dictionary (01 Mar 1998) |
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| rotatory nystagmus | A movement of the eyes around the visual axis. (05 Mar 2000) |
| rotatory spasm | A disorder of unknown cause, manifested as a restricted dystonia, localised to some of the neck muscles, especially the sternomastoid and trapezius; occurs in adults and tends to progress slowly; the head movements increase with standing and walking and decrease with contractual stimuli, e.g., touching the chin or neck. Synonym: dystonic torticollis, rotatory spasm, rotatory tic. (05 Mar 2000) |
| rotatory tic | A disorder of unknown cause, manifested as a restricted dystonia, localised to some of the neck muscles, especially the sternomastoid and trapezius; occurs in adults and tends to progress slowly; the head movements increase with standing and walking and decrease with contractual stimuli, e.g., touching the chin or neck. Synonym: dystonic torticollis, rotatory spasm, rotatory tic. (05 Mar 2000) |
| optical rotatory dispersion | The method of measuring the dispersion of an optically active molecule to determine the relative magnitude of right- or left-handed components and sometimes structural features of the molecule. (12 Dec 1998) |
| auditory vertigo | <neurology> A name applied to recurrent vertigo accompanied by ringing in the ears (tinnitus) and deafness. A dysfunction of the semi-circular canals (endolymphatic sac) in the inner ear. Symptoms include dizziness, hearing loss (one-sided), vertigo, nausea, vomiting and abnormal eye movements. Treatment includes anticholinergics, antihistamines and other medications which relieve vertigo. Diuretic medications have been used to lower pressure in the endolymphatic sac. (27 Sep 1997) |
| aural vertigo | Vertigo caused by disease of the internal ear or pressure of cerumen on the drum membrane. Non-specific term for vertigo caused by labyrinthine disorders. (05 Mar 2000) |
| benign paroxysmal postural vertigo | A recurrent, brief form of postural vertigo occurring in clusters; believed to result from displaced remnants of utricular otoconia. Synonym: cupulolithiasis. (05 Mar 2000) |
| benign positional vertigo | Brief attacks of paroxysmal vertigo and nystagmus that occur solely with certain head movements or positions, e.g., with neck extension; due to labyrinthine dysfunction. Synonym: positional vertigo of Barany, postural vertigo. (05 Mar 2000) |
| gastric vertigo | Vertigo symptomatic of disease of the stomach. Synonym: Trousseau's syndrome. (05 Mar 2000) |
| paralyzing vertigo | A paroxysmal attack of severe vertigo, not accompanied by deafness or tinnitus, which affects young to middle-aged adults, often following a non-specific upper respiratory infection; due to unilateral vestibular dysfunction. Synonym: endemic paralytic vertigo, epidemic vertigo, Gerlier's disease, kubisagari, kubisagaru, paralyzing vertigo. (05 Mar 2000) |
| vertical vertigo | Dizziness experienced when standing upright. (05 Mar 2000) |
| vertigo | <neurology, symptom> An illusion of movement, a sensation as if the external world were revolving around the patient (objective vertigo) or as if he himself were revolving in space (subjective vertigo). The term is sometimes erroneously used to mean any form of dizziness. Origin: L. Vertigo (18 Nov 1997) |
| vertigo ab aure laeso | Vertigo dependent upon chronic middle ear lesions. (05 Mar 2000) |
| mechanical vertigo | Vertigo caused by continued rotation or vibration of the body. (05 Mar 2000) |