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.

trem·or

(trem'ŏr, -ōr),
1. Repetitive, often regular, oscillatory movements caused by alternate, or synchronous, but irregular contraction of opposing muscle groups; usually involuntary.
2. Minute ocular movement occurring during fixation on an object.
[L. a shaking]

tremor

/trem·or/ (trem´er) an involuntary trembling or quivering.
action tremor  rhythmic, oscillatory, involuntary movements of the outstretched upper limb; it may also affect the voice and other parts.
coarse tremor  one in which the vibrations are slow.
essential tremor  a hereditary tremor with onset usually at about 50 years of age, beginning with a fine rapid tremor of the hands, followed by tremor of the head, tongue, limbs, and trunk.
fine tremor  one in which the vibrations are rapid.
flapping tremor  asterixis.
intention tremor  action t.
parkinsonian tremor  the resting tremor 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 tremor of extremely low amplitude found in the legs and sometimes the neck or face of normal individuals; it may become accentuated and visible under certain conditions.
pill-rolling tremor  a parkinsonian tremor of the hand consisting of flexion and extension of the fingers in connection with adduction and abduction of the thumb.
resting tremor  tremor occurring in a relaxed and supported limb or other bodily part; it is sometimes abnormal, as in parkinsonism.
senile tremor  that due to the infirmities of old age.
volitional tremor  action t.

tremor

(trĕm′ər)
n.
1. An involuntary trembling or quivering, as of the hands.
2. A tremulous sound; a quaver: a tremor in her voice.

tremor

[trem′ər, trē′mər]
Etymology: L, shaking
rhythmic, purposeless, quivering movements resulting from the involuntary alternating contraction and relaxation of opposing groups of skeletal muscles, occurring in some elderly individuals, certain families, and patients with various neurodegenerative disorders. Senile tremor is characterized by fine quick movements, especially of the hands, rhythmic head nodding, and increased trembling during purposeful movements. Familial tremor, which may be hereditary, and the tremor occurring in multiple sclerosis also increase during voluntary movement and may be intensified by anxiety, excitement, and self-consciousness. The tremors of Graves' disease, alcoholism, mercury poisoning, and other toxicoses are usually less rhythmic. The tremor in lead poisoning often affects the lips. The fine, quick, continuous tremor present in Parkinson's disease sometimes disappears during purposeful movements. Examples are resting tremor and intention tremor.

tremor

Neurology Involuntary, rhythmic oscillations of a body part, commonly extremities, but also tongue, jaw, head, eyes, voice; tremors are a Sx and not a disease per se; they occur in primarily extrapyramidal, conditions–eg, advanced hepatic encephalopathy, Parkinson's disease, Wilson's disease, myoclonias Tremors as primary Sx Drug-induced tremor, essential tremor, familial tremor Management Beta-blockers–eg, propranolol, metoprolol, ethanol. See Drug-induced tremor, Essential tremor, Familial tremor, Flapping tremor, Intention tremor, Parkinson's disease, Vocal tremor.

trem·or

(trem'ŏr)
1. Repetitive, often regular, oscillatory movements caused by alternate, or synchronous, but irregular contraction of opposing muscle groups; usually involuntary.
2. Minute ocular movement occurring during fixation on an object.
Synonym(s): trepidation (1) .
[L. a shaking]

tremor

Rhythmical oscillation of any part of the body, especially the hands, the head, the jaw or the tongue. Tremor does not necessarily imply disease but is a feature of conditions such as CEREBELLAR ATAXIA, ENCEPHALITIS, ESSENTIAL-FAMILIAL TREMOR, LIVER FAILURE, MERCURY POISONING, MULTIPLE SCLEROSIS, PARKINSON'S DISEASE, THYROTOXICOSIS and WILSON'S DISEASE. It is also a side effect of many antipsychotic and other drugs.

Tremor

Shakiness or trembling.

tremor

involuntary trembling movement; may be idiopathic (e.g. caused by fear), or characteristic of disease, e.g. Parkinson's disease, thyrotoxicosis

trem·or

(trem'ŏr)
1. Repetitive, often regular, oscillatory movements caused by alternate, or synchronous, but irregular contraction of opposing muscle groups; usually involuntary.
2. Minute ocular movement occurring during fixation on an object.
[L. a shaking]

tremor (trem´ər),

n rhythmic, purposeless, quivering movements resulting from the involuntary alternating contraction and relaxation of opposing skeletal muscle groups.

tremor

a continuous repetitive twitching of skeletal muscle, usually palpable and visible. The diseases characterized by tremor only, the tremor syndromes, may be caused by degenerative disease of the nervous system, e.g. hypomyelinogenesis, and by many toxins, especially plant ones. Tremor is also a sign in many other diseases of the nervous system.

action tremor
rhythmic, oscillatory, involuntary movements of the limbs.
coarse tremor
that involving large groups of muscle fibers contracting slowly.
congenital tremor syndrome of piglets
epidemic tremor
fibrillary tremor
rapidly alternating contraction of small bundles of muscle fibers.
fine tremor
one in which the vibrations are rapid.
intention tremor
one occurring when voluntary movement is attempted. See also volitional tremor (below).
rest tremor
tremor occurring in a relaxed and supported limb.
tremor syndrome
see shaker dogs. Called also white dog shaker syndrome.
volitional tremor
trembling of the entire body during voluntary effort.

Patient discussion about tremor

Q. how do you know if you have early onset of alzheimers? i'm 47. i do have extreme tremors at times and memory l i was told this could be what i have by a psychiatrist. What else can cause me to have these symptoms at my age and how do i know?

A. any time ;)

Q. Should I go for the knife? I have essential tremor for many years, and in the last few years it seems nothing helps it, and although I tried all the drugs my doctor could offer me, nothing helps. It really ruins my life, and recently I read about a surgery that suppose to treat it, called thalamotomy- does anyone know anything about it?

A. It's a possibility, and considered effective (reducing tremor in most of the patients). However, it has quite serious side effects, that can result even in weakness of some parts of your body. You should think really good before you opt for this treatment. Good luck!

Q. How do you tell between temporal shaky hands and parkinson disease? My dear granpa's hands are being a bit shaky lately. I was wondering if I should worry about Parkinson's disease or is it most likely to be something else? How to tell? are there other symptoms for Parkinson's?? Any help...

A. The tremor (shaking body parts) of Parkinson disease appears during rest of the limb and disappears or weakens during active movement. Additionally, Parkinson's disease cause walking problems and slow movements.

You may read more here:
http://www.nlm.nih.gov/medlineplus/parkinsonsdisease.html

More discussions about tremor
References in periodicals archive ?
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