Yeah, dealing with mental illness in a family member is a disgusting thing. I don't have personal experience with this, but I think such patients need much care and family support. It is hard to handle such patients, but with our patience and love, we can overcome that difficulty. Recently I read an article which is related to dealing with an addictive personality ( http://www.canadadrugrehab.ca/blog/family-support/family-members-in-addiction/ ), I think, the points which were discussed in that article is relevant to deal with people who are suffering from mental health problems. I don't know whether you are searching for this kind of information. Hope this will help. All the best.