[anujsharmax]

> how would you determine which one an individual is dealing with?

The individual needs to talk to an expert (a doctor or a therapist) to find this.

Many medical issues show similar symptoms - we go to a doctor for a physical issue, then why do we think we know enough to diagnose mental issues?

These things are complex, and it is okay to ask for help.

[keratin7]

I'm not saying that we're, by any means, qualified to self diagnose. The problem with your analogy is there are physical attributes/tests that tell doctors what is wrong when dealing with physiological problems. Even when the methods rely on us telling the doctors, it's usually a binary choice. On the other hand, it gets a lot more subjective when it comes to mental health.