M.
C.,
Without knowing how much your son is really eating, it is hard to say...but you describing his actions of starvation and eating off the floor, and not doing anything except scarfing food seems to be more than just being underfed. You must take him to a specialist and have him looked at. On top of several diseases that manifest in kids as overeating, there is the general issue of obesity at some point, early onset diabetes, heart problems, etc. My hubby is a nurse and he tells me this issue is very prevalent today in kids. But hubby says there are diseases where this is a symptom...cerebral palsy is one. There is another that is fairly rare, but it is called Prader-Willi Syndrome and the overeating, tantrums for food, etc seem to mimic this disease...it could be early signs that he will have an issue with binge eating. Again, this is not to scare you...and it is hard to say without seeing what he is eating. I mean, if he is eating the same amount as you or your hubby and still hungry, there is an issue there for sure. But either way, to be on the safe side, I would have him looked at more closely. Hope that helps!