Table 1.
Main and subcategories identified from the expert survey.
| Main category | Subcategory |
|---|---|
| Description of attacks/episodes | Duration of attacks |
| Episodic/continuous | |
| Strength of attacks | |
| Evolution of attacks | |
| Frequency of attacks | |
| Type of vertigo | |
| Associated symptoms | Aural symptoms |
| Headache | |
| Visual symptoms, oscillopsia | |
| Photophobia, phonophobia | |
| Gait/balance unsteadiness | |
| Psychological symptoms | |
| Nausea/vomiting | |
| Neurological symptoms | |
| Autonomic symptoms | |
| Cervical tension/pain | |
| Medication | |
| Effect on daily life | |
| Comorbidities | Musculoskeletal |
| Diabetes | |
| Autoimmune disease | |
| Psychiatric (anxiety, depression) | |
| Neurological | |
| Cardiovascular disease | |
| Trigger | Alcohol |
| Noise | |
| Movement | |
| Pressure change (air pressure, valsalva) | |
| Specific situation | |
| Trauma | |
| Stress/lack of sleep | |
| Current herpes viral infection | |
| Changing body position | |
| Family history | Comorbidities |
| Vertigo | |
| Hearing loss | |
| Migraine | |
| Duration of disease (first–last episode) | Last episode |
| Age of onset | |
| Mitigating factors |