> the diagnosis isn't based on any genetic marker Neither is depression, PTSD, autism, chronic pain, schizophrenia, narcissism, MPD, and so forth. But they all

> the diagnosis isn't based on any genetic marker Neither is depression, PTSD, autism, chronic pain, schizophrenia, narcissism, MPD, and so forth. But they all exist. And they can all be debilitating to the point of becoming a disorder. They all have treatments according to their classification. Being invisible doesn't make it not be a disorder.