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
Anti-NMDA receptor encephalitis
Meningitis
Neoplasms
Paraneoplastic Limbic encephalitis
Malignant Meningitis
Pancreatic Insulinoma
Seizures
Nonconvulsive status epilepticus
Postictal state<unk> 
Alzheimer's
Lewy Body<unk> 
Frontotemporal<unk> 
Diffuse axonal injury
Subdural/epidural hematoma
Intraparenchymal hemorrhage
Hemispheric, brainstem
Encephalitis
Anti-NMDA receptor encephalitis
Meningitis
Paraneoplastic Limbic encephalitis
Malignant Meningitis
Pancreatic Insulinoma
Nonconvulsive status epilepticus
Postictal state
Alzheimer's
Lewy Body<unk> 
Frontotemporal<unk> 
Acute psychosis
Catatonia
Excited delirium
Malingering
HIV neurologic complications
Toxoplasmosis
Cryptococcosis<unk><unk> 
Seizures in patients with HIV-AIDS
Primary CNS lymphoma
HIV pulmonary complications
Pneumocystis jirovecii pneumonia (PCP)
Tuberculosis (TB)
CMV pneumonia
Ophthalmologic complications
CMV Retinitis
Herpes Zoster Ophthalmicus
Other<unk>  fever of unknown origin
Immune reconstitution inflammatory syndrome
HIV diarrhea
Kaposi's sarcoma
Pruritic papular eruption of HIV
Hairy oral leukoplakia
HAART medication side effects
HAART-induced lactic acidosis
Neuropyschiatric effects
Hepatic toxicity
Renal toxicity
Steven-Johnson's
Cytopenias
GI symptoms
Endocrine abnormalities
Toxoplasmosis
Cryptococcosis<unk><unk> 
Seizures in patients with HIV-AIDS
Primary CNS lymphoma
Pneumocystis jirovecii pneumonia (PCP)
Tuberculosis (TB)
CMV pneumonia
CMV Retinitis
Herpes Zoster Ophthalmicus<unk>  fever of unknown origin
Immune reconstitution inflammatory syndrome
HIV diarrhea
Kaposi's sarcoma
Pruritic papular eruption of HIV
Hairy oral leukoplakia
HAART-induced lactic acidosis
Neuropyschiatric effects
Hepatic toxicity
Renal toxicity
Steven-Johnson's
Cytopenias
GI symptoms
Endocrine abnormalities
AIDS dementia complex
Hypoxic encephalopathy
Anti-NMDA receptor encephalitis
Acute toxic-metabolic encephalopathy 
Prion disease
Hypoglycemia
HIV neurologic complications
Hyperosmolar state 