Health issues in general falls under "disclaimer" and not "warnings" in my opinion. As an autistic person with ADHD I would rather want to see a disclaimer note on the work, so I'm reminded that the creator will be taking creative liberties on the subject.
In today's age we are talking a lot about AWARENESS and ACCEPT of mental health. However, in many cases it is not the awareness that is an issue, but the general accept of the diversity and existence of people living with a diagnose.
So, again, I wish to emphasize that mental health is not something to be warned of, but more to be enlightened and made aware of through a disclaimer. From all the movies I've watched covering psychological topics it has always been put under disclaimers, whereas the violence and crime subjects falls under warnings.
As someone with a diagnose I feel utterly alienated by having my condition displayed on a creative work like something evil, violent, and illegal.
Imagine putting the subject of having a cold, having cancer, getting your limb amputated, or having a disability that is lifelong under "warnings".
I'm not saying that it is wrong to bring up awareness to the reader that mental health is a subject in the work they are about to read, but I'm saying you need to really think about the way you choose to display it as it is a very sensitive subject, both to those in the community that has a very diverse opinion on how they wish to be seen, and those who don't have a diagnose, but might relate, AND those who have no idea of what it all entails.
Sorry for going off on a tangent, but I hope that you would at least consider my POW on this and keep your eyes out for anyone else in the Tapas community (be it reader or creator) who is able and comfortable enough to speak up and offer insight
That is all, Mini