The Neurology Section provides High Yield Content to prepare medical students for the USMLE, COMLEX, Medical School, and Residency. Prepare and Learn Ahead!
Table Of Contents
Vitamin B12 Deficiency
Tremors
- Psychogenic tremor:
- an abrupt onset, spontaneous remission, changing characteristics, and extinction with distraction.
- Cerebellar tremor:
- an intention tremor with ipsilateral involvement on the side of the lesion.
- Neurologic testing will reveal past-pointing on finger-to-nose testing.
- CT or MRI of the head is the diagnostic test of choice.
- Parkinsonian tremor:
- noted at rest, is asymmetric, and decreases with voluntary movement.
- Bradykinesia, rigidity, and postural instability are generally noted.
- For atypical presentations, a single-photon emission CT or positron emission tomography may help with
the diagnosis. - One of the treatment options is carbidopa/levodopa.
- Essential tremor:
- have symmetric, fine tremors that may involve the hands, wrists, head, voice, or lower extremities.
- Improve with the ingestion of small amounts of alcohol.
- No specific diagnostic test but the tremor
- Treated with propranolol or primidone.
- Enhanced physiologic tremor:
- a postural tremor of low amplitude exacerbated by medication.
- History of caffeine use or anxiety.