Insomnia is a sleep disorder that makes it difficult to fall asleep, stay asleep, or wake feeling rested. As a result, individuals may experience insufficient or poor-quality sleep that affects daily functioning. Insomnia may be short-term (acute) or long-lasting (chronic), and symptoms can sometimes come and go.

 

It often occurs alongside medical or mental health conditions such as anxiety, depression, or cognitive disorders. Because quality sleep is essential for physical and mental health, persistent sleep problems can lead to fatigue, difficulty concentrating, and reduced overall wellbeing.