My wife is bipolar, manic only and seems to be doing well without medication. This is what I posted on the epilepsy forum, but with no reply. Does this sound like a bipolar issue?

My wife has never been officially diagnosed but from what she has told me I think she has a form of epilepsy, she is 40 years old now. When she was a teenager, she suffered from full blown physical seizures. She never remembered much, the doctors just treated the symptoms. When she became pregnant at 19, all seizures stopped, completely. The only problem she has had since is that sometimes when she drinks heavily, she will have a memory laps. She wakes up doing something normal but has no memory leading up to that point. During this laps, she acts normal and does normal things. This is only while drinking, never after. She isn't a big drinker. Other info is that she is also bipolar, manic only, no depression at all. She is on no medication for anything except cholesterol and hypertension. Does this sound like epilepsy to anyone? Sound familiar?