Can generalised anxiety disorder cause insomnia?

Generalised anxiety disorder involves excessive worry across everyday areas, often with difficulty controlling the worry. At night, fewer distractions can make anxious thoughts feel louder. Muscle tension, restlessness, repeated checking, and concern about not sleeping can delay sleep or cause frequent waking. Poor sleep can then leave you more irritable, tired, and less able to manage worry, creating a reinforcing cycle. Insomnia can also have other causes, including medicines, pain, breathing problems, low mood, or an irregular sleep schedule.

Keep a regular wake time and allow a calm wind-down before bed. Write down worries and tomorrow's tasks earlier in the evening so they are not rehearsed in bed. Use the bed for sleep rather than prolonged worrying or phone use, and leave it briefly for a quiet activity if you remain awake and tense. Reduce caffeine later in the day and keep the bedroom dark, quiet, and comfortable. Treatment for Generalised Anxiety Disorder, including talking therapy or prescribed medicine, may improve both worry and sleep; discuss options with a clinician rather than starting sleep medicines on your own.

Arrange an appointment when sleep difficulty lasts, affects daytime functioning, or is accompanied by persistent worry, panic, low mood, or difficulty concentrating. Seek urgent help if you feel unsafe, have thoughts of harming yourself, or have gone without sleep with unusually elevated energy, racing thoughts, or risky behaviour. A clinician can assess anxiety, sleep, physical health, and medicines together.

Ask whether your sleep pattern fits insomnia, how anxiety treatment may affect sleep, whether a sleep diary would help, and which symptoms should prompt urgent mental-health support.