Trauma/mechanical: SDH, PIVD
Vascular: infarct, H'ge, AVM, migraine
Epileptic: partial or generalized sz.
CSF circulation: hydrocephalus, pseudotumor cerebri, intracranial hypotension
Toxic/metabolic: drugs, electrolytes, endocrine, nutrition, organ failure, opiate OD, hepatic encephalopathy
Infection/inflammation/neoplasia: bacterial meningitis, inflammatory disease (multiple sclerosis), neoplastic d/o (glioblastoma multiforme)
Degenerative/Developmental: Alzheimer's disease, tuberous sclerosis
Referred: Left arm paresthesiae due to cardiac ischemia
Psychiatric: MDD, conversion d/o
Other non-neurological d/o: LOC 2° to cardiac arrhythmia, impaired gait 2° to joint deformity.