For the past 3+ years I have been experiencing what I call sleep attacks. These are not narcoleptic in nature, are associated with slurred, slow, speech, and cause a loss of balance that makes me walk with my feet apart like a drunk to compensate. I feel a sudden overwhelming desire to sleep I cannot resist. I know I have a few minutes to pull over and park or make coffee for morning and brush my teeth before I have to close my eyes and give in. Last evening (usually but not always in the evening), it hit me about 8:30, I was out by 8:40 and then woke up at midnight unable to go back to sleep. I’ve seen a neurologist who tested ,e for MS, Myasthenia Gravis and other neuromuscular disorders and found nothing except neuropathy on the bottom of my feet. I feel ,Ike I’m walking on paper all the time tho, not just when I have a sleep attack. I’m a retired RN and have researched everything from narcolepsy to brain tumors to sleep wake disorders and nothing fits. What is this?