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单词 tremor
释义

tremor


tremor

a minor earthquake

Tremor

 

an involuntary trembling of the entire body or parts of it. Tremors are characteristically rhythmic and stereotypic; usually they have a narrow range, most often affecting the fingers, eyelids, tongue, lower jaw, and head. In healthy subjects, tremors may be caused by muscular strain, emotional excitement, or exposure to cold. Pathological tremors may be symptoms of chronic alcoholism, thyrotoxicosis, neurotic states, acute infections, and such diseases as parkinsonism. The symptom is treated by treating the primary disease.

Eye tremor is an involuntary rapid movement of the eyeball in relation to the optic axis; its frequency is from 20 to 150 Hz, and its amplitude, from 5 to 15 seconds of arc. Visual perception itself depends to a significant degree on eye tremor, which produces constant changes in the illuminance of certain photoreceptors—that is, the photoreceptors located at the variously illuminated points of the retinal periphery. An image whose projection on the retina remains completely stable for more than a few seconds ceases to be perceived by the visual centers of the brain.

tremor

[′trem·ər] (geophysics) A minor earthquake. Also known as earthquake tremor; earth tremor. (medicine) Involuntary, rhythmic trembling of voluntary muscles resulting from alternate contraction and relaxation of opposing muscle groups.

tremor


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" >parkinson's disease, which affects nerve centers in the brain that control the muscles. They also occur in cerebral palsy, hyperthyroidism, and withdrawal" >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" >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 tremor" >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

(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

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.Mentioned in: Antiarrhythmic Drugs, Antiparkinson Drugs

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]

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

tremor


Related to tremor: essential tremor
  • all
  • noun
  • verb

Synonyms for tremor

noun shake

Synonyms

  • shake
  • shaking
  • tremble
  • trembling
  • shiver
  • quaking
  • wobble
  • quiver
  • quivering
  • agitation
  • vibration
  • quaver

noun earthquake

Synonyms

  • earthquake
  • shock
  • quake
  • tremblor

Synonyms for tremor

noun a shaking of the earth

Synonyms

  • earthquake
  • quake
  • seism
  • temblor
  • tremblor
  • shake

noun a nervous shaking of the body

Synonyms

  • quake
  • quiver
  • shake
  • shiver
  • shudder
  • thrill
  • tic
  • twitch

Synonyms for tremor

noun an involuntary vibration (as if from illness or fear)

Synonyms

  • shudder

Related Words

  • vibration
  • quivering
  • quiver

noun a small earthquake

Synonyms

  • earth tremor
  • microseism

Related Words

  • earthquake
  • quake
  • seism
  • temblor
  • aftershock
  • foreshock

noun shaking or trembling (usually resulting from weakness or stress or disease)

Related Words

  • quivering
  • shakiness
  • trembling
  • vibration
  • shaking
  • palpitation
  • quiver
  • essential tremor
  • paralysis agitans
  • Parkinsonism
  • Parkinson's
  • Parkinson's disease
  • Parkinson's syndrome
  • shaking palsy

verb shake with seismic vibrations

Synonyms

  • quake

Related Words

  • shake
  • agitate
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更新时间：2025/3/1 23:37:19