Your doctor will likely diagnose insomnia based on your medical and sleep histories and a physical exam.

To find out what’s causing your insomnia, your doctor may ask whether you:
Have any new or ongoing health problems?
Have painful injuries or health conditions, such as arthritis?
Take any medicines, either over-the-counter or prescription?
Have symptoms or a history of depression, anxiety, or psychosis?
Are coping with highly stressful life events, such as divorce or death?