you would have to wait a few years and ask him but maybe he is just becoming one tough dude. likes to eat hates dirty diapers and does get bothered by minor injuries or the minor discomfort of an injection. i don't think there is anything wrong with him at all.
my baby cries when he is hungry or diaper is wet but he doesn't cry when he is hurt by falling down & after injection? . is it normal for baby not crying after someone hit him or he accidentally hit himself on his face. he received vaccination at his 8th month birthday. and he didn't cry from this injection. please explain? thank you kay