I can understand being able to pick up on autism, and some personality disorders. Mood disorders -- unless there is obvious suicide or psychosis -- can be trick

I can understand being able to pick up on autism, and some personality disorders. Mood disorders -- unless there is obvious suicide or psychosis -- can be tricky though. Some people are just really energetic, and fit, and excitable. Some people act out their emotions more than others so it can seem more than it really is. Giving unsolicited diagnoses puts you at risk of being accused of being a 'gaslighter', etc. In many cases it's like if you see a really skinny person and are convinced they are anorexic... Some people are just skinny, just like many people put on weight alarmingly easy. And then there's malingering psychosis -- there's a horror film. I'm pretty sure I knew someone like this, but I could never say anything (I suspected they had BPD and were feigning psychosis.)