<unk> s are common among individuals with multiple sclerosis (MS). One common symptom of multiple sclerosis is ataxia, a lack of coordinated muscle movement caused by cerebellar lesions characteristic of multiple sclerosis. The disease often destroys physical and cognitive function of individuals.<unk> s can be a first sign of multiple sclerosis, since loss or deterioration of motor function and sensitivity are often one of the first symptoms of cerebellar lesions.<unk> s have a variety of other recorded causes as well. These include a variety of neurological disorders, such as stroke, alcoholism, alcohol withdrawal, peripheral neuropathy, Wilson's disease, Creutzfeldt–Jakob disease, Guillain–Barré syndrome and fragile X syndrome, as well as brain tumors, low blood sugar, hyperthyroidism, hypoparathyroidism, insulinoma, normal aging, and traumatic brain injury. Holmes tremor, a rubral or midbrain tremor, is another form of tremor that includes<unk> s, among other symptoms. This disease affects the proximal muscles of the head, shoulders, and neck. Tremors of this disease occur at frequencies of 2–4 Hz or more.<unk>  is also known to be associated with infections, such as West Nile virus, rubella, H. influenza, rabies, and varicella. A variety of poisons have been shown to cause<unk> , including mercury, methyl bromide, and phosphine. In addition, vitamin deficiencies have been linked to<unk> , especially deficiency in vitamin E. Pharmacological agents such as anti-arrhythmic drugs, anti-epileptic agents, benzodiazepine, cyclosporine, lithium, neuroleptics, and stimulants have been known to cause<unk> . Some ordinary activities including ingesting too much caffeine, cigarettes, and alcohol, along with stress, anxiety, fear, anger and fatigue have also been shown to cause<unk>  by negatively affecting the cerebellum, brainstem, or thalamus, as discussed in mechanisms.
Intention tremor
Essential tremor
Holmes tremor
Scissor gait
Misophonia
Dyskinesia
Abnormal posturing
Myopathic gait