Viral encephalitis
Neuroleptic malignant syndrome
Primary psychiatric disorder
Hyper/hypothyroidism
Cushing syndrome
Addison's disease
Catatonia
Cerebral space occupying lesions
Drugs, toxins, withdrawal
Chorea
Sydenham's chorea
Neuroleptic malignant syndrome
Serotonin syndrome
Hypocalcemia
Strychnine toxicity
Acute tetanus
Parkinson's disease
Mono amine oxidase inhibitor toxicity
Phencyclidine toxicity<unk> 
Huntington disease
Wilson's disease 
CVA
Schizophrenia
Psychotic agitation
Dementia
Lewy body dementia
Vascular dementia
Frontotemporal dementia
Dystonic reaction
Extrapyramidal reaction
Torticollis
Idiopathic movement disorder
Sydenham's chorea
Lewy body dementia
Vascular dementia
Frontotemporal dementia
Hypoxic encephalopathy
Acute toxic-metabolic encephalopathy (Delirium)
Hypoglycemia
Hyperosmolar state (e.g., hyperglycemia)
Electrolyte Abnormalities (hypernatremia or hyponatremia, hypercalcemia)
Organ system failure
Hepatic Encephalopathy
Uremia/Renal Failure
Endocrine (Addison's disease, Cushing syndrome, hypothyroidism, myxedema coma, thyroid storm)
Hypoxia
CO2 narcosis
Hypertensive Encephalopathy
Toxins
TTP / Thrombotic thrombocytopenic purpura
Alcohol withdrawal
Drug reactions (NMS, Serotonin Syndrome)
Environmental causes
Hypothermia
Hyperthermia
Deficiency state
Wernicke encephalopathy
Subacute Combined Degeneration of Spinal Cord (B12 deficiency)
Vitamin D Deficiency
Zinc Deficiency
Sepsis
Osmotic demyelination syndrome (central pontine myelinolysis)
Limbic encephalitis
Hypoglycemia
Hyperosmolar state (e.g., hyperglycemia)
Electrolyte Abnormalities (hypernatremia or hyponatremia, hypercalcemia)
Organ system failure
Hepatic Encephalopathy
Uremia/Renal Failure
Endocrine (Addison's disease, Cushing syndrome, hypothyroidism, myxedema coma, thyroid storm)
Hypoxia
CO2 narcosis
Hypothermia
Hyperthermia
Wernicke encephalopathy
Subacute Combined Degeneration of Spinal Cord (B12 deficiency)
Vitamin D Deficiency
Zinc Deficiency
Direct CNS trauma
Diffuse axonal injury
Subdural/epidural hematoma
Vascular disease
Intraparenchymal hemorrhage
SAH
Stroke
Hemispheric, brainstem
CNS infections
Encephalitis<unk> 
Meningitis
Neoplasms
Paraneoplastic Limbic encephalitis
Malignant Meningitis
Pancreatic Insulinoma
Seizures
Nonconvulsive status epilepticus
Postictal state
Dementia
Alzheimer's
Lewy Body Dementia
Frontotemporal Dementia
Diffuse axonal injury
Subdural/epidural hematoma
Intraparenchymal hemorrhage
Hemispheric, brainstem
Encephalitis<unk> 
Meningitis
Paraneoplastic Limbic encephalitis
Malignant Meningitis
Pancreatic Insulinoma
Nonconvulsive status epilepticus
Postictal state
Alzheimer's
Lewy Body Dementia
Frontotemporal Dementia
Acute psychosis
Catatonia
Excited delirium
Malingering
Anti-NMDA receptor encephalitis
Viral encephalitis
CMV neurologic disease
Neuroleptic malignant syndrome
Limbic encephalitis
Primary psychiatric disorder
Primary CNS lymphoma
Hyper/hypothyroidism