My son has schizophrenia (Sz) along with both depression and anxiety. Dealing with just one can be a challenge let alone varying degrees of all three. Throw in drug/alcohol abuse and the desire to NOT get help and you have a recipe for disaster in most cases.
Thank God my son is NOT in that category but I know parents who can't say the same.
Parents of and those with are hopeful that sz will one day--soon!--be less stigmatic as the other more minor, better-known illnesses (not to say that the others are where they need to be, of course). After all, autism has come a long way in a seemingly short time.