Just wondering if any of you have experienced this with any of the children you care for or your own children.

Quite often when my 2.5 year old son wakes up he starts off crying and then it turns into a full blown temper tantrum. He starts screaming because the blankets are on him, if you talk to him, if you walk out of the room, if you try to touch him, if you do nothing…you get the point. He starts kicking his legs, sobbing, and wailing and then after a couple of minutes he stops and then he's fine. He's never been much of a temper tantrum kind of boy besides the usual 'I do it!!' melt down or something that's normal but my husband and I have no idea why he always wakes up crying and why 75% of the time it turns into a massive tantrum. I've even tried just leaving him because I thought that maybe he just wakes up grumpy and needs to wake up a bit but it just starts to get louder and louder and he eventually he starts waking up all of the other kids if I don't get to him fast enough.

Any of you guys experience this? Got any suggestions?
Thanks is advance