Hi, I have a friend who has a 7 month old baby who's thumb is stiff, doesn't seem to be usable & won't bend. Do you know what might cause this? Is this something to be worried about? ie. Is it related to other conditions?? I can't find any information about it!!! Please help.
The baby is extremely quiet, smiles all the time to the point where it seems like he doesn't stop smiling, doesn't seem to be attentive to sounds around him and can't crawl.
We are worried and thought someone must know something about what it could be??