I deleted it because I realized I was talking out of my ass. I haven't even read the DSM 5 or whatever number we are on now and checked. Part of the reason that I said that and haven't even looked up the criteria for diagnosis is because I disagree with the idea being pushed (and pushed hard) that mental health is the EXACT SAME as physical health. I don't understand the comparison that is often made between depression and cancer, for example. With cancer, we know what it is, what it's doing, and the mechanism of the disease and the mechanism of treatment is fundamentally the same for all people. With depression, we don't know what it is, don't know what it's doing, and the mechanism of the disease and the mechanism of treatment are not even remotely the same for all people. And cancer has many types and I've never heard of a type of depression (besides postpartum). It seems there should be a bunch of different types of depression.
Maybe it's a definitional issue with "depression" being too broad of a category. People who are dealing with childhood trauma, current grief, untenable life circumstances, seemingly nothing at all, or *insert reason here*, people who can go to work everyday and have no one be the wiser and people who can't crawl out of bed to the fridge despite starving and not having eaten in 3 days (I've been both btw) cannot all have the exact same medical "disease," with a uniform diagnosis and treatment method, in my eyes. And for the OCD thing, I don't even really know what it is.
Again, the reason I deleted it is because I don't know what I'm talking about, but since you asked, that's what I believe.