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Query: UMLS:C0027066 (myoclonus)
 4,275 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

At present there are two methods of management of tinnitus: one old, by masking with a noise generator, and one new, by biofeedback. Neither of these methods is convenient and neither gets at the heart of the problem. A third method, using intravenous lidocaine as a test and oral carbamazepine therapy, was developed in the Pain Clinic of the Auckland General Hospital in New Zealand. This paper will report our brief experience with these drugs in the management of tinnitus and other similar disorders. Twenty-seven patients with intractable tinnitus had a significant reduction from a test dose of intravenous lidocaine and were treated with oral carbamazepine. Of this group 1 patient (4%) had complete relief, 21 patients (78%) had partial relief, and 5 patients (18%) had no relief. Complications were few and not serious, and either disappeared spontaneously or when the carbamazepine was stopped. One patient with palatal myoclonus, refractory to all other forms of treatment, had complete relief on a small dose of carbamazepine. It may be that palatal myoclonus, hemifacial spasm, and other such clonic convulsive disorders will be amenable to the same treatment.
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PMID:Management of tinnitus aurium with lidocaine and carbamazepine. 68 4

Palatal myoclonus with its concomittant objective tinnitus is often a missed diagnosis and poses a problem to the clinician in separating it from other middle ear anomalies. The etiology and symptomatology is outlined, but as suggested by our case presentations are not always diagnostic. The anatomical pathways of palatal myoclonus are traced, and its etiological complexities are realized when any locus or pathology along these tracks may create the characteristic chronic rhythmic contractions. We have experienced excellent results in determining a differential diagnosis of palatal myoclonus from other middle ear problems by the correlations of impedance audiometry with our clinical findings. Although the etiology is not defined the target structures can be separated from this test method and, therefore, enable more specific therapy.
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PMID:The otological aspects of palatal myoclonus. 93 88

Tinnitus due to muscular causes is rare. The commonest pathological muscular cause of tinnitus is palatal myoclonus. A case of bilateral tinnitus, related to eyelid blinking, is presented. This is the first case reported in the literature. Previous reported cases of tinnitus related to eyelid blinking have all been unilateral and associated with recovery from a VII nerve palsy. The treatment of the condition is discussed.
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PMID:Tinnitus related to eyelid blinking. 154 89

The literature relating to the effects of otological surgery on tinnitus is reviewed. The results of such surgery are often unpredictable with respect to postoperative tinnitus, and ablative surgery may well make the tinnitus worse. The concept of somatosounds (tinnitus arising from outside the auditory pathway) is presented, and the management of some conditions, including patulous Eustachian tube and palatal myoclonus, is discussed.
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PMID:Tinnitus. II: Surgical management of conditions associated with tinnitus and somatosounds. 217 77

A 41-year-old female of mitochondrial myopathy characterized by recurrent paralytic ileus and atonic bladder with the evidence of peripheral nerve involvement was described. This patient was admitted to our hospital because of the episode of paralytic ileus and atonic bladder at the age of 40 and 41 (1987). She had noticed sporadic headache from 1967, constipation from 1977, tinnitus and hearing disturbance from 1984. One month after her second admission in 1987, her symptoms of paralytic ileus and atonic bladder gradually disappeared. She was then transferred to the department of neurology for the evaluation of underlining neurological disorders. Neurological examination revealed dementia, oro-lingual dyskinesia, and proximal muscular weakness. However, none of the following signs or symptoms were observed; Ophthalmoplegia, blepharoptosis, retinitis pigmentosa, myoclonus, cerebellar ataxia, sensory disturbance, and orthostatic hypotension. Deep tendon reflexes were normal. Planter responses were flexor. Pyruvate and lactate were elevated in both serum and cerebrospinal fluid. Brain CT scan displayed moderate cerebral atrophy and basal ganglia calcifications. EMG was normal except for the external anal sphincter muscles which showed a denervation pattern. Motor nerve conduction velocity was normal in the right median and the right peroneal nerves. Sensory nerve conduction velocity was also normal in the right median and the right sural nerves. However, the amplitude of sensory potential was low in both these nerves. Atonic type of neurogenic bladder was noted on cystometry. There was a lack of voiding desire. The number of active sweat glands iontophoretically stimulated by pilocarpine was reduced. The most prominent feature of the muscle biopsy (the left biceps brachii) was myopathic changes with ragged-red fibers.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Paralytic ileus and atonic bladder in a case of mitochondrial encephalomyopathy--electrophysiological, chemical and pathological study with evidence of the peripheral nerve involvement]. 255 55

Twelve cases of well established palatal myoclonus with objective clicking tinnitus were treated with tinnitus masking techniques. After a few months, three patients became completely symptom free, one for five years now. A further four patients continued to get periods of relief from their clicking sounds with continuous masking, and four patients found the distracting effects of the white noise helped them. The mechanism of palatal myoclonus is discussed with reference to the part played by masking therapy in this condition.
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PMID:The suppression of palatal (or intra-tympanic) myoclonus by tinnitus masking devices. A preliminary report. 343 42

Objective tinnitus is often caused by palatal myoclonus. We report a 15 years old boy with objective tinnitus in both ears and palatal myoclonus. He had myorhythmic movements of both tensor veli palatini muscles asynchronous with the objective tinnitus. The frequency of the clonus was 120 contractions a minute. The myoclonus and the objective tinnitus disappeared after division of the bilateral tensor veli palatini muscles.
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PMID:[Objective tinnitus caused by myoclonus of the musculus tensor veli palitini]. 397 49

Velo-pharyngo-laryngeal myoclonus, the rapid, rhythmic contraction of muscles of the pharynx and larynx, is a rare neurological manifestation of numerous disease processes affecting the cerebellum. In its most common form, palatal myoclonus, this disease frequently presents to the otolaryngologist as objective tinnitus. Impedance audiometry provides a useful means of verifying suspected palatal myoclonic activity through recorded changes in the middle ear pressure, as mediated by muscle activity at the proximal portion of the eustachian tube. A very rare case of velo-pharyngo-laryngeal myoclonic with clonic contraction of the laryngeal adductors and subsequent extrathoracic airway obstruction is presented. Tracheostomy provided immediate symptomatic relief of dyspnea.
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PMID:Velo-pharyngo-laryngeal myoclonus: evaluation of objective tinnitus and extrathoracic airway obstruction. 671 28

Objective tinnitus is a rather rare condition that may be due to myoclonus of certain muscles, such as the palate, or to arteriovenous communications, either congenital or acquired. In cases of palatal myoclonus the diagnosis of the causative factor is not always easy, but the use of tympanometry, EMG, and EEG may help in establishing the diagnosis. In cases of arteriovenous communications a pulse synchronous tinnitus is present. It may be temporarily obliterated by applying pressure over the mastoid area or over the carotid artery on the affected side. Audiometric and tympanometric studies are not diagnostic, and very careful angiographic studies are necessary because routine tests may not show the lesion. The case presented suggests another etiologic possibility for vascular objective tinnitus: a stenosis of certain branches of the external carotid artery. The treatment for myoclonic causes of objective tinnitus has been for the most part unsatisfactory, whether it be medical or surgical. On the other hand, surgical treatment of arteriovenous communications results in complete amelioration of signs and symptoms--hence the necessity for an accurate diagnosis.
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PMID:Objective tinnitus: a case report. 685 39

Two patients with objective tinnitus due to continuous tubal opening are presented. The objective tubal tinnitus was found to be due to clonic spasm of the muscles of the pharynx and eustachian tube and it can be easily differentiated by means of sonotubometry alone. The acoustic events occurring during the clicking sound were analyzed and were similar to the swallowing sound. Movements of the tympanic membrane were not seen in any of these ears. However, the close relationship of the tensor tympani and tensor palati muscles could explain the movement of the tympanic membrane in some cases. I believe that stapedius muscle spasm or a patulous tube as such does not cause the clicking sound, but it can occur in association with palatal myoclonus. The objective tubal tinnitus is heard as a result of the walls of the eustachian tube snapping together. Transection of the tensor veli palatini muscle tendon may be a useful method of treatment if the patient experiences objective tinnitus which is very distressing.
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PMID:Objective tubal tinnitus: a report of two cases. 688 47


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