II. General
- Consider secondary causes if outside typical ages
- Onset in pre-pubertal children
- Onset after age 40 years
III. Causes: Drugs of Abuse
- Alcohol Abuse
- Amphetamine abuse
- Cocaine Abuse
- Hallucinogen abuse
- Opiate Abuse
- Bath Salts
- Phencyclidine (PCP)
IV. Causes: Collagen vascular disease
V. Causes: Infectious disease
- Neurosyphilis
- HSV Encephalitis
- Influenza
- Encephalitis (e.g. Arboviruses such as St. Louis Encephalitis)
- HIV Encephalitis
VI. Causes: Endocrine disease
VII. Causes: Neurologic disease
- Multiple Sclerosis
- Huntington's Chorea
- Wilson Disease
- Head Trauma
- Complex Partial Seizures
- Cerebrovascular Accidents
- Migraine Headache
- Neoplasms (esp. diencephalic or Third Ventricle)
VIII. Causes: Vitamin Deficiency
IX. Causes: Medications
- Neuropsychiatric
- Cardiovascular
- Endocrine
- Miscellaneous
- Baclofen
- Bromide
- Procarbazine
- Yohimbine
- Cimetidine
- Isoniazid
- HIV Medications (including Integrase Inhibitors)