resting tremor


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tremor

 [trem´or, tre´mor]
an involuntary trembling of the body or limbs; it may have either a physical or a psychological cause. Early symptoms include trembling of the hands and nodding of the head. Tremors are often associated with parkinson's disease, which affects nerve centers in the brain that control the muscles. They also occur in cerebral palsy, hyperthyroidism, and withdrawal from narcotics or alcohol. They tend to develop as one of the results of aging, and are sometimes symptoms of temporary abnormal conditions such as insulin shock, or of poisoning, especially metallic poisoning. They sometimes appear with a high fever resulting from an infection. Tremors of psychological origin take many forms, some minor and some serious. Violent, uncontrollable trembling is often seen in certain phases of severe mental disorders. If there is no physiological cause, they may be a sign of general tension.
action tremor rhythmic, oscillatory movements of the outstretched upper limb when voluntary movements are attempted, as when writing or lifting a cup; it may also affect the voice and other parts. Called also intention tremor and volitional tremor.
coarse tremor that involving large groups of muscle fibers contracting slowly.
essential tremor a hereditary tremor with onset at varying ages, usually at about 50 years of age, beginning with a fine rapid tremor (as distinct from that of parkinsonism) of the hands, followed by tremor of the head, tongue, limbs, and trunk; it is aggravated by emotional factors, is accentuated by volitional movement, and in some cases is temporarily improved by alcohol.
fine tremor one in which the vibrations are rapid.
flapping tremor asterixis.
intention tremor action tremor.
parkinsonian tremor a type of resting tremor commonly seen with parkinsonism, consisting of slow, regular movements of the hands and sometimes the legs, neck, face, or jaw; it typically stops upon voluntary movement of the part and is intensified by stimuli such as cold, fatigue, and strong emotions.
physiologic tremor a rapid transient tremor of extremely low amplitude found in the limbs and sometimes the neck or face of normal individuals, only subtly detectable on an electromyogram and seldom visible to the naked eye; it may become accentuated and visible under certain conditions.
rest tremor (resting tremor) one occurring in a relaxed and supported limb, such as a parkinsonian tremor.
senile tremor one due to the infirmities of old age.
volitional tremor action tremor.

rest·ing trem·or

a coarse, rhythmic tremor, 3-5 Hz frequency, usually confined to hands and forearms, which appears when the limbs are relaxed and disappears with active limb movements; characteristic of Parkinson disease.
Synonym(s): passive tremor

resting tremor

an involuntary tremor occurring when the person is at rest. It is one of the signs of Parkinson's disease. Also called passive tremor. See also action tremor, tremor.

rest·ing trem·or

(rest'ing trem'ŏr)
A coarse, rhythmic tremor, 3-5 Hz frequency, usually confined to hands and forearms, which appears when the limbs are relaxed, and disappears with active limb movements; characteristic of Parkinson disease.
References in periodicals archive ?
Firstly, the resting tremor did not spread to contralateral side for more than three years.
Whereas, resting tremor is a primary non-voluntary motor feature of PD, action tremor refers to tremor during voluntary contraction of muscles and includes postural, isometric, and kinetic tremor.
When conducting the physical exam, remember that PD is a resting tremor and thus tends to improve with movement, but essential tremor worsens with movement.
Rajput AH, Rozdisky B, Ang L: Occurrence of resting tremor in Parkinson's disease.
The role of reflexes in the resting tremor of Parkinson's disease.
Parkinson's Disease ("PD") is a progressive and ultimately fatal neurodegenerative disease characterized by debilitating physical symptoms including resting tremor, rigidity, bradykinesia, and gait dysfunction2,3.
Clinical features include resting tremor, rigidity, bradykinesia, postural instability and responsiveness to levodopa.
nursing-home residents, the three best predictors of PD were the presence of a resting tremor, a unilateral onset of symptoms, and a beneficial and sustained response to levodopa, the investigators noted (Pharmacotherapy 1999;19:1321-7).
In terms of clinical features, 11 patients had tardive dyskinesia (including 5 with respiratory dyskinesia), 2 had akathisia, 19 had tremor (17 with resting tremor and 6 with asymmetric tremor, alone or in combination), and 3 had akinetic rigidity.
Several other factors can also help differentiate DIP from Parkinson's disease, including: subacute onset, bilateral features, more postural tremor than resting tremor, and the presence of other extrapyramidal signs.