6 month old night terrors?

[DaisyB80]

Since 4 months my son goes down fine but routinely screams hysterically after 45/60 mins. Eyes used to be shut but are now often wide open. He's sweaty, looking around like he doesn't know where he is and consoled after 5 mins of lullabies, cuddling. Tried leaving him to settle, sometimes does, often gets more hysterical. This continues until 10/11pm in cycles. Also has never slept through and has been teething on and off since 3 months. Is any of this normal? Worried something in the day is mentally disturbing him perhaps...thanks

45/60 minutes about equates to one natural sleep cycle.

We all (adults, children, babies) sleep in natural cycles. After one sleep cycle ends and another sleep cycle begins, their is a brief period of wakefulness. In most adults, we would turn over in bed at this point. A child may shuffle around and possibly grumble. But the key thing is most people go straight back to school.

How well does your son self-settle? I wonder if the problem is that he briefly wakes between a sleep cycle but cannot get back to sleep himself as would normally happen. The screaming, wide starry eyes and sweating could be because a moment ago he was asleep and all of a sudden he is awake and his body wants to go back to sleep but can't.

Straight back to school sleep I meant.

Thank you for your reply FATEdestiny. Yes, he can self settle but often the next screaming session is sooner if I've left him to it (20 mins) after he's fallen back to sleep.
I think it could be sleep cycles and suspect Ewan the sheep could be a factor. If he wakes and Ewan is not on he possibly can't re settle. Maybe I should run up and turn Ewan on as soon as he cries but tbh I have been keen to wean him off Ewan before he has to go to nursery.
He is also a fairly light sleeper and still in with us so we may be disturbing him? He doesn't sleep for longer than 45 minutes in the day either come to think of it. Could be the cycles again......