My father seems to have bipolar disorder. For 5 to 6 months his interaction with people will be very less, very calm and quiet, won't prefer to go out and mingle with people. Where as in the begining of December month he gets very irritated, short tempered, lack of sleep, wakes up around 2am. He won't sit at home at all, speaks a lot with people. Due to this behaviour he sometimes end up in very serious disputes. This stage last for 4 to 5 months. He is not willing to go and consult a doctor regarding this and get very furious if we try to convince him to visit a doctor. He is now 71 years old. He is suffering from this from more than 40 years. Is there any way we can handle this situation?