Hello, The problems of your father described by you here are very significant and seem to be a part of a mental health disorder. He is not doing any of these behaviours knowingly, but rather in the influence of mental illness. The best course of action that I can suggest for you and your father is to seek a consultation with a psychiatrist near you for comprehensive assessment and management of the problems described by you. A early onset dementia, psychosis, or mania seem to be highly probable diagnosis, however a detailed assessment including history, physical examination, psychological interview and some investigations are likely to be required. His condition can be helped, however please take h to a psychiatrist near you at the earliest. Hope this helps you. Best wishes for your health and future.