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Tremor and movement disorders
Movement disorders are conditions and syndromes that affect your ability to produce and control movement.
Tremor is an involuntary movement disorder of a limb in a to-and-fro manner.
That problem is usually either something worrying and degenerative, something longstanding and static, or something temporary, like alcohol use.
Clinical and Associated Features
Hyperkinetic (loads of movement!)
- Dystonia - muscle contractions, causing weird twisting, or repetitive moevement. Can affect anywhere in the body. Ranges all the way from mild cramp, to crazy upper body limb flailing. Can be painful.
- Tremor - Uncontrollable shaking of a body part. Can occur when relaxed, or during an action (intention tremor).
- Tics - Involuntary, rapid, nonrhythmic movement or sound. Tics can be controlled briefly.
- Myoclonus - A sudden, shock-like muscle contraction. Myoclonic jerks may occur singly or repetitively. Unlike tics, myoclonus cannot be controlled even briefly.
- Chorea - Rapid, nonrhythmic, usually jerky movements, most often in the arms and legs - seen in Huntingdons.
Hypokinetic (lack of movement)
- Bradykinesia - Slowness of movement.
- Freezing - Inability to begin a movement or involuntary stopping of a movement before it is completed.
- Rigidity - An increase in muscle tension when an arm or leg is moved by an outside force.
- Postural instability - Loss of ability to maintain upright posture caused by slow or absent righting reflexes.
Something worrying and degenerative
- Huntingons's disease - commonly causes chorea. Genetically inherited, leads to death.
- Parkinson's disease - more commonly hits in old age. Causes the parkinsonism features. Generally doesn't kill people, but can massively restrict lifestyle.
- Multiple sclerosis - can cause random issues from individual muscle weaknesses, to losing control or sensation in a leg. Takes a few years but eventually kills you.
- Other stuff - mainly brain problems - especially ones in the cerebellum, such a brain tumour or infection; or Wilson's disease.
Something longstanding and static
- Tourette's syndrome - Tourette's, well known for having people shout out "AARDVARK!", is actually mostly a cause of tics and spasms, and rarely has the vocal component.
- Essential tremor - The biggest cause in the UK population of tremor, this is a (usually) mild tremor, noted mostly in the hands, present all the time. Whilst generally benign, it can be very frustrating to the individual.
- Alcohol abuse - can make you walk funny, as can drug abuse.
- Infection - This is serious. Not sure I know much about it though.
- Receiving a Stone Cold Stunner - this will KNOCK YOU DOWWWWWWWWWWN!
- Head CT wouldn't hurt either.