Insomnia in Mental Health Nursing: Assessment and Comprehensive Management
Insomnia is persistent difficulty initiating sleep, maintaining sleep, returning to sleep after awakening, or waking earlier than desired despite adequate opportunity, with daytime distress or impaired functioning. It may be a primary sleep disorder, a symptom of mental or physical illness, a medicine/substance effect, or an environmental problem.
Red flags: markedly reduced need for sleep with increased energy may signal mania; sleeplessness with confusion may be delirium; severe depression, psychosis, withdrawal, breathing pauses, dangerous daytime sleepiness or suicidal thoughts requires urgent assessment.
Normal sleep
Sleep alternates between non-rapid eye movement and rapid eye movement stages. Circadian timing is regulated by light exposure and the internal body clock, while sleep pressure builds with time awake. Stress, irregular schedules, daytime sleeping, stimulants and prolonged time awake in bed can condition the bed as a place of worry rather than sleep.
Classification
| Pattern | Description | Examples |
|---|---|---|
| Sleep-onset | Long delay before sleep | Anxiety, stimulants, poor schedule |
| Sleep-maintenance | Repeated/prolonged awakening | Pain, alcohol, sleep apnoea, environment |
| Early-morning awakening | Wakes earlier and cannot return | Depression, circadian change |
| Acute | Short-term response to stress, illness or environmental change | Bereavement, hospitalization |
| Chronic | Persistent recurring difficulty with daytime impairment | Conditioned arousal, comorbidity |
Causes and risk factors
- Psychiatric: depression, anxiety, PTSD, psychosis, bipolar mania, substance-use disorder and dementia.
- Physical: pain, breathlessness, reflux, pruritus, nocturia, endocrine disease, pregnancy/menopause and neurological illness.
- Sleep disorders: obstructive sleep apnoea, restless legs, circadian-rhythm disorder and parasomnias.
- Substances/medicines: caffeine, nicotine, stimulants, alcohol, cannabis withdrawal, corticosteroids, decongestants and activating psychotropics.
- Environment/behaviour: noise, light, heat, ward observations, shift work, screen use, irregular bedtimes and excessive daytime naps.
Assessment
- Define bedtime, time to sleep, awakenings, final waking, naps, total sleep, schedule variability and daytime consequences; use a 1–2 week sleep diary where feasible.
- Ask about snoring, witnessed apnoea, gasping, restless legs, unusual nocturnal behaviour and dangerous sleepiness.
- Assess mood, increased energy/mania, psychosis, trauma, suicide risk, cognition, pain, substances, medicines and pregnancy.
- Examine vitals, BMI/airway where apnoea suspected, thyroid/neurological/cardiopulmonary signs and medicine adverse effects. Tests are targeted; polysomnography is for suspected sleep apnoea/other sleep disorders, not routine uncomplicated insomnia.
Non-pharmacological management
Cognitive behavioural therapy for insomnia (CBT-I)
- Stimulus control: use bed for sleep, go to bed when sleepy, leave bed briefly if unable to sleep and keep a consistent rising time.
- Sleep scheduling: match time in bed to actual sleep under trained guidance, then expand as sleep consolidates. Use caution in epilepsy, bipolar disorder, pregnancy, older/frail patients and hazardous occupations.
- Cognitive work: challenge catastrophic beliefs such as “I will not function at all” and reduce clock watching.
- Relaxation: paced breathing, progressive muscle relaxation and a wind-down routine reduce physiological arousal.
- Relapse prevention: identify triggers and restore routines early.
Sleep hygiene and ward care
- Consistent sleep/wake schedule, morning daylight and daytime activity.
- Avoid caffeine/nicotine late, alcohol as a sleep aid, heavy late meals and prolonged daytime naps.
- Reduce nighttime noise/light and cluster nursing procedures where clinically safe; provide pain, toileting, temperature and breathing comfort.
Medicines
Medicines are secondary to diagnosis and behavioural treatment. Use the lowest effective dose for the shortest appropriate period, with a clear review/stop plan.
| Group | Role | Risks and nursing monitoring |
|---|---|---|
| Benzodiazepines | Selected severe short-term insomnia or protocol-defined withdrawal | Tolerance, dependence, rebound insomnia, falls, amnesia and respiratory depression; dangerous with opioids/alcohol and in sleep apnoea. |
| Z-drugs | Short-term hypnotic where available | Falls, confusion, dependence and complex sleep behaviours; caution older adults. |
| Sedating antidepressants | When coexisting depression or another indication supports use | Orthostasis, anticholinergic effects, weight/metabolic or cardiac effects vary by agent; not harmless sleeping tablets. |
| Antipsychotics | Psychosis/mania—not routine primary insomnia | Metabolic effects, EPS, QT prolongation and sedation; avoid prescribing solely for sleep without strong indication. |
| Antihistamines | Limited short-term use | Anticholinergic confusion, urinary retention, constipation and next-day sedation, especially older adults. |
Special clinical situations
- Mania: reduced need for sleep plus elevated/irritable mood and increased activity needs urgent bipolar assessment and treatment.
- PTSD: nightmares and hyperarousal require trauma-informed care; assess safety and avoid routine dependence-forming medicines.
- Older adults/dementia: treat delirium, pain, nocturia and environmental causes; avoid anticholinergic/sedative burden.
- Substance withdrawal: alcohol/sedative withdrawal can cause seizures/delirium and needs protocol management, not simple hypnotic treatment.
Nursing care plan
| No. | Intervention | Rationale and measurable outcome |
|---|---|---|
| 1 | Record sleep diary, naps, substances, nighttime events and daytime function. | Identifies pattern and response; outcome is improved sleep efficiency/function. |
| 2 | Assess mania, delirium, depression/suicide, withdrawal and apnoea red flags each review. | Prevents dangerous misdiagnosis. |
| 3 | Plan consistent schedule, daylight/activity and calming bedtime routine. | Strengthens circadian rhythm and sleep drive. |
| 4 | Cluster ward care, manage pain/toileting and reduce noise/light safely. | Removes modifiable sleep disruption. |
| 5 | Administer prescribed hypnotic correctly; monitor RR, SpO₂, confusion, falls and next-day sedation. | Detects serious adverse effects and interaction. |
| 6 | Teach short-term medicine plan and avoid alcohol, driving or hazardous work when sedated. | Prevents dependence and injury. |
Evaluation and prevention
Evaluate sleep latency, awakenings, total sleep, daytime alertness, mood and function—not only “hours slept.” Prevent recurrence through regular routine, early treatment of mental/physical illness, cautious medicine use, substance-risk reduction and CBT-I skills.
Revision questions
- Differentiate insomnia from reduced need for sleep in mania.
- Explain five CBT-I components.
- Compare hypnotic classes, contraindications and nursing monitoring.
- Develop six nursing diagnoses with measurable outcomes.
References
- WHO. mhGAP Guideline, 2023.
- WHO. ICD-11 Clinical Descriptions and Diagnostic Requirements, 2024.