Insomnia is a common sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing poor quality sleep. It can lead to daytime fatigue, irritability, and difficulty concentrating. Insomnia can be caused by various factors, including stress, anxiety, depression, medical conditions, and certain medications. Treatment options for insomnia may include cognitive behavioral therapy, sleep hygiene practices, and medications. Chronic insomnia can have a negative impact on overall health and quality of life, so it is important to seek help from a healthcare provider if experiencing persistent sleep difficulties.