Help!

My DS (14 months) has a habit of using his hands and whacking himself on the head. I consulted a friend who works with autistic kids, and she has advised me that it is most likely he is doing it for attention. She told me to hold his hand and look away and ignore him every time he does it.

However, he's now starting to use his head and bang it against the play pen frame, or anything else for that matter. The other day when he was sitting with DH and I in bed, he dropped and our heads banged but he wasn't phased at all where as I was in pain with a headache for the rest of the day!!!

Not only am I worried about his health, but I don't know how to teach him against this antisocial behaviour. I am also worried that maybe this is a sign for a sympton I am not aware of?!

If anyone has experienced this with their kids please share.