Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. The condition could be schizophrenia. People with Schizoid type disorder ignores circumstances. Rather, they don t seem to recognize circumstances or the present world around them. They live in a world of their own. As you said, talk to them selves, indulge in activities without considering others views etc. You should take your mother to a psychiatrist for diagnosis and proper treatment. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe some psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.