Conversely, small amounts of alcohol may help to decrease familial and essential tremor, but the mechanism behind it is unknown. Alcohol potentiates GABAergic transmission and might act at the level of the inferior olive. Tobacco withdrawal symptoms include tremor. Most of the symptoms can also occur randomly when panicked. Causes
Tremor can be a symptom associated with disorders in those  parts of the brain that control muscles throughout the body or in particular areas, such as the hands. Neurological disorders or conditions that can produce tremor include multiple sclerosis, stroke, traumatic brain injury, chronic kidney disease and a number of  neurodegenerative diseases that damage or destroy parts of the brainstem or the cerebellum,  Parkinsons disease being the one most often associated with tremor. Lesions of the Guillain-Mollaret triangle (also called myoclonic triangle or dentato-rubro-olivary pathway) impair the predictions performed by the cerebellum, causing repetitive muscle discharges by triggering oscillatory activity in the central nervous system. Other causes include the use of drugs (such as amphetamines, cocaine, caffeine, corticosteroids, SSRIs) or alcohol, mercury poisoning, or the withdrawal of drugs such as alcohol or benzodiazepine. Tremors can also be seen in infants with phenylketonuria (PKU), overactive thyroid or liver failure. Tremors can be an indication of hypoglycemia, along with palpitations, sweating and anxiety. Tremor can also be caused by lack of sleep, lack of vitamins, or increased stress. Deficiencies of magnesium and thiamine have also been known to cause tremor or shaking, which resolves when the deficiency is corrected.
In addition, the users reported that the exoskeleton did not affect their voluntary motion. These results indicate the feasibility of tremor suppression through biomechanical loading. The main drawbacks of this mechanical management of tremor are (1) the resulting bulky solutions, (2) the inefficiency in transmitting loads from the exoskeleton to the human musculo-skeletal system and (3) technological limitations in terms of actuator technologies. In this regard, current trends in this field are focused on the evaluation of the concept of biomechanical loading of tremor through selective Functional Electrical Stimulation (FES) based on a (Brain-to-Computer Interaction) BCI-driven detection of involuntary (tremor) motor activity. See also
Cerebral Palsy
Fasciculation  ("at rest" muscle twitches; usually benign). Fibrillation
Restless Leg Syndrome
Shivering
Chronic solvent-induced encephalopathy
Neurology

References
External links

"NINDS Tremor Information Page". National Institute of Neurological Disorders and Stroke. July 20, 2007. Archived from the original on October 6, 2007. Retrieved 2007-10-08. Some text copied with permission and thanks. Sigvardt, Karen A.; Wheelock, Vicki L.; Kuznetsov, Alexey S.; Rubchinsky, Leonid L. (4 October 2007). "Leonid L. Rubchinsky et al. (2007) Tremor". Scholarpedia. 2 (10): 1379. doi:10.4249/scholarpedia.1379. orthostatictremor.org