I am having a real hard time with my husband. He sneaks and does cocaine or something thinking I don't know. It is white powderery looking stuff in a little tie twisted bag. He does not snort it but takes it through his mouth. He has been doing this for years. At least one day a week, he is sick, talks out of his head, has even had a fever at times, and screams like he is in pain. Then, it will go away for a few days. He acts senile a lot. He can't stand without rocking back and forth. He drools sometimes and does not even know it. Does anyone know what this is? Is it drugs or mental?