There seems to be a few of us dealing with this. It makes me feel more at ease that it isn't a freakish thing he is doing IYKWIM.

Arimeh: Glad to hear it didn't go on for ages. Not looking forward to the squealing though.

Mum of Many: I am the same as you. I am so worried that he will hurt himself. I got the courage to ask the GP and he reassured me it is just a stage and will likely just go away with time. But you're right, it would be a difficult thing to explain to a hossy.

Raven: What a clever little boy you have running to the carpet. DS seems to go for the most dangerous thing he can find (aka the glass doors). I think I'll take your advice and try removing him to his room when he is going on a head banging binge. The video idea is a good one. I think I'll do the same and when he is older show him. 21st perhaps (she says with an evil laugh)

Kitt3n: What an interesting tactic. I think DS would be totally confused if I did the same but hey, anything is worth a try.

Thanks for your help ladies.