| Abbreviations | Term |
| ACTH | Adrenocorticotrophic hormone |
| ADHD | Attention deficit hyperactivity disorder |
| ALD | Adrenoleukodystrophy |
| AMN | Adrenomyeloneuropathy |
| ASD | Autism spectrum disorder |
| BAER | Brainstem auditory evoked response |
| CALD | Cerebral Adrenoleukodystrophy |
| CNS | Central nervous system |
| CST | Corticospinal tract |
| CSTC | Cortico-striato-thalamo-cortical |
| DSM | Diagnostic and statistical manual of mental disorders |
| DWI | Diffusion-weighted imaging |
| EEG | Electroencephalogram |
| FIAS | Focal seizures with impaired awareness |
| HOVD | Higher order visual dysfunction |
| ICD | Impulse control disorder |
| MRI | Magnetic resonance imaging |
| NCS | Nerve conduction studies |
| NPI-Q | Neuropsychiatric Inventory Questionnaire |
| OCD | Obsessive compulsive disorder |
| VEP | Visual evoked potentials |