A sleep medicine psychiatrist works at the point where poor sleep and mental illness feed each other. Insomnia, a disrupted body clock, recurring nightmares and physical sleep disorders such as sleep apnoea do not just sit alongside depression, anxiety or bipolar disorder, they actively make each other worse, which means treating the sleep problem often improves the psychiatric one more than adjusting psychiatric treatment alone would.
Assessment covers sleep patterns in detail: what time someone falls asleep and wakes, how often they wake through the night, what their days look like, and what effect current medication is having on all of it. Where a physical sleep disorder such as apnoea is suspected, referral for a sleep study is arranged alongside the psychiatric assessment rather than instead of it.
Treating insomnia properly
For insomnia itself, the recommended first-line treatment is cognitive behavioural therapy for insomnia, not long-term sleeping tablets, which lose effectiveness over time and carry dependence risk. A sleep medicine psychiatrist will often support access to this structured therapy rather than defaulting to medication, reserving short-term prescribing for specific situations.
They also review, often for the first time, what a person's existing psychiatric medication is doing to their sleep, an effect that is common and frequently missed in routine reviews elsewhere.