First I have to say I know nothing about this, just what I have read on the web, and I you know how that goes. My daughter is right about 22 months old and is waking up a couple times a week screaming, crying, and is nearly inconsolable for several minutes. This is a different sort of behavior than her normal middle of the night and" where is Mama and Papa" wake up. She doesn't seem to recognize me or my wife and will wail/swing her arms erratically. Seems to work best to try and wake her up completely to get her to calm down. You have to raise your voice, turn on lights etc to even get her attention. Once you do get her attention she often settles down rather quick and falls back asleep. This is vastly different than a normal night where she cries alittle and will calm down almost immediately when her mother or I walk in the room. On these occasions she seems to take much longer to get back to sleep. Almost like falling asleep for the first time. I don't remember having night terrors myself but I am prone to odd behavior in my sleep. I'll carry on conversations in my asleep that my wife says are odd and nonsensical or out of character for me. There are other weird behaviors but suffice it to say I don't really asleep like normal. Are sleep disorders even hereditary? Regardless of why it happens, I'm heartbroken everytime it happens and I feel helpless to resolve it. Anyone else have experience dealing with this behavior in their kids?