The Signal: The FDA just approved the first “prescription” video game. EndeavorRX treats ADHD — a condition that affects 5-11% of kids in the US and Europe — and was clinically shown to eliminate attention deficits in 30% of test subjects after 4 weeks of use. It is the latest in an emerging field of treatments known as “Prescription Digital Therapeutics” (PDTs).

According to Sean Duffy, whose company Omada Health coined the term PDT, the main difference between PDTs and the apps you can find in the app store is that PDTs undergo rigorous clinical testing.

“That’s why the term ‘digital therapeutic’ was born: to categorize evidence-based, clinically validated, and regulatory-adherent digital interventions in a sea of apps and programs claiming the broad mantle of digital health,” he wrote recently.