Bipolar is when a person could be very happy one day and very depressed the next with no reason like remembering that your failing a class then being depressed but forgetting about it and being happy. It’s more like I’m happy then next day you could also be happy but then just depressed the next bipolar can usually know when they are going to get an episode of depression or happiness but can be hard for others to know when.( I’m not bipolar myself but I’m taking a heath class where we recently leaned about this topic) also mainly effects older people talk to your doctor about it if you feel like it there’s some ways to treat it that your doctor can help with they would also be more in knowledgeable about this topic than me