Insomnia Severity Index (ISI)
What Is the Insomnia Severity Index (ISI)?
The Insomnia Severity Index (ISI) is a widely used screening questionnaire designed to assess the nature, severity, and impact of insomnia symptoms.
The tool consists of seven questions that evaluate common sleep difficulties such as problems falling asleep, staying asleep, waking too early, and the impact of poor sleep on daily functioning.
Each item is scored from 0 to 4, based on the severity of symptoms experienced during the past two weeks. The total score helps estimate the overall severity of insomnia.
Higher scores may indicate clinically significant sleep disturbance that may benefit from professional evaluation or treatment.
The ISI is widely used in sleep medicine, psychiatry, and primary care as a quick and reliable method for identifying insomnia symptoms.
Reviewed by a Psychiatrist
This screening tool is provided by Dr. Mahendra Singh Uikey, Consultant Psychiatrist, and is based on evidence-based sleep medicine and psychiatric practice guidelines. It is intended for educational and screening purposes only and does not replace professional consultation.
Clinical Reference:
Bastien CH, Vallières A, Morin CM. Validation of the Insomnia Severity Index. Sleep Medicine, 2001.
Evidence-based psychiatric treatment • Online & in-person appointments • Bhopal | Delhi-NCR | India | Global
What Does This Mean?
This score reflects the severity of symptoms based on your responses.
Early professional assessment can help clarify diagnosis and guide appropriate treatment options.
Learn more about the relationship between sleep and mental health in our Sleep & Mental Health resource page.
Link:
👉 Sleep & Mental Health
Frequently asked questions
What is the ISI test?
The Insomnia Severity Index (ISI) is a self-report screening questionnaire used to assess the severity, impact, and distress associated with insomnia.
What score indicates significant insomnia?
Scores of 15 or above suggest moderate to severe insomnia and should be evaluated by a qualified mental health professional.
Is this insomnia test a diagnosis?
No. The ISI is a screening tool and does not replace professional medical evaluation.
Is this insomnia test confidential?
This online screening tool does not collect or store personal data. It is intended for private self-assessment.
Can insomnia be related to depression or anxiety?
Yes. Sleep disturbances are commonly associated with depression, anxiety, and stress-related conditions.