Quoting Amy Packer:" Do they go away on their own or do they just happen at random for a while? Should I pick him up when ... [snip!] ... that I couldn't help. He finally calmed down after about 15 minutes and went to sleep so I'm just laying here cuddling him."
They do eventually go away on their own. During the night. And over all really. You can do what makes you feel better. But really not a lot can really help. Babies and kids that have night terrors are hard to wake up. I used to snuggle with and rub my son's back