Insomnia: symptoms, causes and support

Insomnia is ongoing difficulty falling asleep, staying asleep, or getting sleep that feels restorative despite having the chance to sleep.

It can be short-lived around a stressful change, illness or disrupted routine, or continue long enough to affect daytime functioning. The concern is not simply the number of hours slept; it is the repeated mismatch between sleep opportunity and sleep quality, together with its effect on daily life.

People with insomnia commonly spend a long time awake at bedtime, wake during the night, wake earlier than intended, or feel unrefreshed after sleep. Daytime sleepiness, difficulty concentrating, fatigue, irritability and memory problems can accompany the condition. These symptoms can also have other causes, so the overall pattern matters.

Stress, worry and a changing routine can keep the mind and body alert when sleep is wanted. Caffeine, nicotine, alcohol, shift work, travel across time zones, pain, breathing problems during sleep and some medicines may also disturb sleep. Generalised anxiety disorder or jet lag can be relevant in some people, but an assessment looks at your own circumstances rather than assuming a single cause.

A poor night can lead to extra time in bed, daytime naps, checking the clock or worrying about the next night. Those understandable responses may make the bed feel linked with wakefulness and increase pressure to sleep. A plan often focuses on changing that learned pattern gradually while addressing the trigger that started it.

Insomnia is more likely during major life changes, ongoing stress, irregular work schedules and periods of physical or emotional ill health. A bedroom that is noisy, bright or too warm can add to the problem. Repeated use of alcohol to induce sleep can fragment sleep later in the night.

A clinician will ask about your sleep pattern, daytime effects, work schedule, mood, medicines and physical symptoms. A sleep diary can show recurring patterns. Further checks may be considered when another sleep disorder, a medical problem or a mental health concern could be contributing. Bring a list of medicines and note any snoring, gasping, leg discomfort or pain that interrupts sleep.

Treatment is tailored to the cause and the pattern of wakefulness. Sleep-focused behavioural therapy can help rebuild a consistent sleep routine and reduce unhelpful associations with the bed. Practical measures include a regular waking time, winding down before bed, limiting stimulants later in the day and leaving the bed briefly for a quiet activity if wakefulness becomes frustrating. Medicines may occasionally be considered for a limited purpose after a clinician reviews risks, other medicines and the underlying cause.

Keep a simple record of bedtime, waking, naps, drinks containing caffeine and how alert you feel. Aim for a repeatable morning routine, daylight exposure and daytime movement suited to your health. Avoid driving or operating machinery when sleepiness makes you unsafe. Tell a clinician if low mood, severe anxiety or troublesome daytime functioning are part of the picture.

Arrange a clinical review when poor sleep persists, interferes with work or relationships, or occurs with loud snoring, breathing pauses, distressing mood symptoms or marked daytime sleepiness. A mental health assessment can help identify anxiety, low mood or other concerns that may need support alongside sleep care.