- Psychiatric Disorders
- Cardiovascular Disorders
- Infectious Disorders
- Human Immunodeficiency Virus Induced Neuropathy (HIV-related Neuropathy)
- Tertiary Syphilis
- Metabolic Disorders
- Musculoskeletal Disorders
- Neurologic Disorders
- Cerebellar Degeneration
- Dementia
- Delirium
- Multiple Sclerosis
- Myelopathy
- Normal-pressure Hydrocephalus
- Parkinsonism
- Cerebrovascular Disease
- Vertebrobasilar Insufficiency
- Vestibular disorders
- Miscellaneous