Just that really. I have many students in this category, and they all seem to feel that there is some sort of holy grail of mental health which is being deliberately maliciously withheld from them, but I don't actually think there is anything that helps.
Students with severe mental health problems, such as schizophrenia, or psychosis, there is treatment and medication.
But students with anxiety, depression, and things like that, there just isn't anything known that helps. I've known umpteen kids reach the top of the list and get to CAMHS, and be offered therapy, medication or whatever, but 9 times out of 10, it makes no difference.
There doesn't really seem to be any known treatment that works. We have not discovered anything yet.