New Google test to help diagnose depression

Looking up "depression" on Google will now allow users in the US to check whether they are clinically depressed, thanks to a new self-assessment feature added to the popular search engine.

The feature, launched for users in the US, will provide an option to take a clinically validated screening questionnaire called PHQ-9 when a person Googles the word "depression".

They will also see a box atop the results on the mobile, which Google calls a Knowledge Panel. The box contains information on what depression is, what its symptoms are, and possible treatments.

The self-assessment is private and is meant to help encourage people who might be depressed to seek medical help.

The new feature "is not meant to subvert a medical evaluation. It is meant to steer you to one if you appear depressed," Google spokesperson Susan Cadrecha told 'The Verge'.

"The results of the PHQ-9 can help you have a more informed conversation with your doctor," according to the National Alliance on Mental Illness, which partnered with Google on the questionnaire.

Depression is a common illness worldwide that affects more than 300 million people, according to the World Health Organization (WHO).

It is the leading cause of disability worldwide, and is a major contributor to the overall global burden of disease.

More women are affected by depression than men. At its worst, depression can lead to suicide.