Consent. Scenario 6 of 34. Private information
Told in confidence
Your friend Kai tells you, in confidence, that they are being assessed for ADHD. They have not told anyone else yet.
A week later a mutual friend, Mo, says: "Kai's been a bit off lately. Do you know what's going on?" Mo is asking because he cares.
The principle
Consent covers information as well as bodies. When someone tells you something private, they have agreed to you knowing. They have not agreed to anyone else knowing.