Symptoms include difficulty falling asleep, waking up during the night, waking up too early, not feeling well-rested after a night's sleep, daytime tiredness, irritability, and difficulty concentrating.

Causes include stress, anxiety, depression, poor sleep habits, medical conditions, medications, and lifestyle factors such as caffeine and alcohol use.

Treatments include improving sleep habits, cognitive behavioral therapy, and medications. It's important to consult a healthcare provider for a personalized treatment plan.