I have an undergraduate psychology degree AND I live with clinically diagnosed OCD and panic disorder. When people find out these facts about me, many of them will ask some variation of the question, "Can you diagnose someone for me?" Sometimes it's asked in the way people often ask someone who is fluent in another language to say something on the spot, like asking a person to showcase an interesting talent just for fun. Other times, it comes from a place of legitimate concern for the person they're asking me to diagnose. Sometimes, they're asking for themselves, to figure out if they have one of the mental illnesses that I have.
I'm not qualified to diagnose anyone with mental illness just because I have an undergraduate degree in psychology. In order to diagnose someone with mental illness, I would need to have an advanced degree like a master's degree, Ph.D. or even a Psy.D. in clinical social work, clinical psychology, or mental health counseling with a certain (VERY LARGE) number of hours practicing clinical mental health counseling under the supervision of a licensed mental health professional to obtain a license to practice. It would be unethical for me to diagnose anyone without having the required experience and credentials.
Living with mental illness also doesn't give me the required expertise to diagnose anyone. I only have knowledge of what mental illness is like FOR ME. Other people with the same mental illness will have a different experience. Additionally, some people don't fit with the traditional symptom outline of a condition, which only a mental health professional would be able to figure out. Saying whether or not someone has a mental illness just based on my personal experience with that mental illness would be wildly inaccurate and unethical at best and disastrously alienating to someone at worst.
Another reason I wouldn't diagnose someone else with a mental illness is because, for the person on the receiving end of the observation and diagnosis, it can be breach of trust and a boundary violation for them if they weren't the one asking for the diagnosis. Nobody should be discussing anybody else's mental health without their consent. Nobody should be observing someone else without their knowledge and consent so they can then discuss whether or not the person in question has a mental illness with that person's friends or family.
Diagnosing someone with a mental illness is a serious thing. It's not a party trick, a nice bit of gossip, or something people should be speculating about. Speculating about the PRIVATE matter of someone's mental health and whether or not they have a mental illness can have a profound effect on the person's self-esteem, their self-worth, and their ability to trust other with sensitive information. It can also affect a person's relationships, employment, and quality of life if the speculations make their way around someone's work or social circle as fact.
I'll end with this: Just because I have an undergraduate degree in psychology and live with clinically diagnosed mental illness does not mean that I am qualified to observe and diagnose other people's mental health conditions. Only an actual mental health professional with an advanced degree, a set number of supervised counseling hours, and a license to practice mental health counseling should be diagnosing mental illness. It's also a breach of trust and a boundary violation to discuss someone's mental health and/or attempt to diagnose someone with a mental illness without their knowledge and consent, even if you mean well.
