My 18 month son wakes up screaming and crying after being asleep for only 3 hours..it's been going on for about 2 months and every night what's wrong?

Talk to your doctor: Acid reflux can do what you are talking about. However, it's best to talk to your doctor. This does not sound normal and it has been going on for a long time.

Other features ??: If the kid is fully awake when you check him and calms to your visit, this can arise from many sources.Separation anxiety, changes in living conditions, absence of a parent, all may play a role.A medical condition should be evident during daytime activities.If the kid is not awakeor doesn't immediately waken to your touch, it might be a sleep disorder called a night terror, more common to older kids.