the itchy and scratchy show

Zack is in a new phase... he likes to pinch you when he's frustrated. And he's biting too, which is unpleasant. The question is : what to do to stop this behaviour ? I'm guessing it's a combination of frustration and teething. We'll need to manage it and be sensitive, because the temptation is to shout "no", and take a hard line. Many schools of thought, many different opinions.
In addition he's head-banging quite often, especially when he's tired or frustrated. He'll hit his head on anything sold (even my chest) and do it again and again, wailing all the time. He won't desist and the expression on his face says, 'mummy it's your fault this is sore'.

We can't talk, so we can't say what the problem is.

We have not been sleeping well at all. Zack has been up every few hours through the night. We're taking it in turn to get up and see to him, and yes, he was running a temperature yesterday and this morning - probably teething. I'm guessing it's a jet-lag/ body clock thing and he's got it all mixed up. He is going to bed on time, but he'll wake around 01h00 and wail, and then it starts sometimes up to every 2 hours. Exhausting. Thankfully we're staying with friends a the moment and there's enough space for Zack to be in his own bedroom, so the door will be shut tonight and baby will have to cry. Enough is enough.