Insomnia is a common sleep disorder that can make it hard to fall asleep, stay asleep, or both. It can leave you feeling tired, irritable, and unable to focus during the day. Insomnia can be short-term (acute) or long-term (chronic). Acute insomnia lasts for a few days or weeks and is often caused by stress, anxiety, or a change in routine. Chronic insomnia lasts for at least three months and can be caused by a variety of factors, including medical conditions, medications, and mental health disorders.

Symptoms of insomnia can include:

- Difficulty falling asleep

- Waking up frequently during the night

- Waking up too early in the morning

- Feeling tired and unrested during the day

- Difficulty concentrating

- Irritability

- Headaches

- Muscle tension

- Stomach problems

If you are experiencing symptoms of insomnia, it is important to talk to your doctor. They can help you determine the cause of your insomnia and recommend treatment options.