Best diagnostic tests for insomnia

Insomnia is a common sleep disorder and can be difficult to diagnose. There are many different tests that can be used to determine if someone has insomnia, but the most commonly used tests are polysomnography (PSG) and actigraphy. PSG measures the number of times a person’s breathing becomes irregular during sleep, while actigraphy records how much an individual’s movements change throughout the night. Other tests that may be used include sleep diary surveys and brain scans. Read more here