I'm off sick, I have Bipolar Disorder. I'm in protracted discussion with work about coming back and having a meeting. I sent my original email explaining how unwell I was, including suicidal thoughts, to my manager and the overall manager.
On reply, manager added the deputy manager into the email chain. I wasn't happy with him knowing. He is temporarily in post, and based on his behaviour as a colleague I don't trust him to keep things confidential. In fact he is well known for going through desks, and telling certain colleagues everything he knows.
The overall manager has said that they had to include him as he sometimes manages alone in their absence. I was of the understanding that any disclosure had to be with my permission. He is aware of my bipolar disorder, but the details of this ill period.
There is no policy that covers this.