My 5-month old grandson wakes up several times a night, sometimes as frequently as every 45 minutes. Sometimes when he awakes, he does so screaming as though he is in terrible pain or being terrorized by something (although I can't imagine what a 5-month old could be that afraid of). At those times, he is inconsolable for as much as an hour or two. Other times, he lets his momma feed him and falls asleep. And yet other times, he eats and then is content to stay away for 45-90 minutes. I feel sooo bad for my son and daughter-in-law, because they're not getting much sleep at all. At least when my own two boys weren't sleeping through the night, I would put them in bed with us and we'd all fall asleep. But that is an absolute NO-NO these days, so they won't even try that. Does anyone have any suggestions on what their little guy's problem might be? Or what they might want to ask their pediatrician to look into?