Common symptoms of OSA
| Daytime symptoms | Night-time symptoms |
| Excessive daytime sleepiness | Snoring, gasping or choking in sleep |
| Fatigue | Witnessed apnoea in sleep |
| Non-restorative sleep | Insomnia |
| Cognitive impairment | Restless sleep |
| Mood disorders | Night-time awakenings, dry mouth |
| Morning headaches | Nocturia |
| Impotence, erectile dysfunction | Nocturnal gastro-oesophageal reflux |