Be sure to have an EMU stay. Ask for one to be sure by a neurologist you arent having seizures. Be sure you use the words blackout, pass out suddenly, no recognition of passing out only evidence you were sleep by what you described.
I had a psychiatrist who thought my symptoms of sudden joy or strong emotion of any kind at first was mood changes until further investigation and decided it was seizures. An EMU stay later they saw me “passing out” and while on EEG could see during each episode my brain was staright sleep in REM sleep. They sent me to a sleep neurologist who did a more intensive 2 day sleep study one over night to rule out sleep apnea followed by an MSLT sleep latency test to see why I fall asleep so much yet dont stay sleep at all.
I now take Modafinil twice during day to help keep me up. It is a stimulant. It helps but I still get fatigue and episodes but not as often episodes if passing out. I stay tired though all the time no matter how much sleep I get.
I also have cataplexy and sleep paralysis so when I have a vivid dream I am aware but unable to physically move. Those happen mostly in the morning round time I am waking up. I am stuck in the dream good or bad till my brain snaps out of it. Hope that helps.