Ok my DS hates the "happy birthday" song. We've laughed about it (not in front of him of course) because he absolutely cannot stand it.

On his 3rd birthday, when everyone started singing it to him, he hid under the table. Thought that was a bit odd, but I did that as a child, which he doesn't know about, so didn't think too much of it.

On his 4th birthday, he begged me to tell everyone to NOT sing the song. So we didn't. He was still concerned when we blew the candles out that people would sing it, even though I stressed to him they wouldn't.

Today we were at a birthday party - and when everyone started singing it to the birthday boy - he ran off and went to another part of the garden and crouched down until it was over.

Is this getting to the unusual stage? I'm wondering if I should get him assessed by someone, but DH is of the opinion that its really not that odd...