DD is nearly 8 months and has been screaming for no apparent reason for months. She quite often smiles while she does it so I don't think its scream of pain or discomfort, just her way of communicating. But it is incessant and quite draining as it is so bloody shrill and loud!
I kind of hope it will stop when she is formulating proper words (at the moment all we are getting between shrieks is nananananana) but wondered if anyone with older DCs thought it sounded familiar.