Insomnia refers to difficulty falling or staying asleep, often linked to stress, illness, or mental disturbance. The sleepless night has long held symbolic significance in literature, representing reflection, worry, or creative thought. Poets frequently use insomnia as a sign of troubled consciousness, where the mind continues its restless activity while the world sleeps. The condition thus becomes both a medical description and a metaphor for emotional unease or intellectual wakefulness.

Insomnia refers to persistent inability to sleep. In poetry sleeplessness frequently symbolises anxiety, grief, guilt, or restless imagination. Many poets portray the night hours as a time when troubled thoughts intensify. Insomnia imagery often includes dim lamplight, quiet rooms, and wandering minds. The condition also reflects the psychological cost of emotional turmoil.