if your son is lethargic and is not eating or drinking very much he may be dehydrated. children can get dehydrated much easier than adults and this can be serious. your son needs to be evaluated by a physician right away. please take him to a doctor immediately.
my son has been lethargic for 48 hours now vomited a lot on friday night but hasnt vomited since. ideas? hardly eating. he vomited twice friday night pretty much pushing everything out. he has been waking up during the night sporadically and whines like he is hungry or in pain. we give hime soymilk due to diaherrea when he drinks regular milk. he has laid around since saturday morning has no energy anddoesnt seem interested in food very much. i know it is mostly out of comfort but we have to be holding him 24/7. neither my wife nor i have slept much since this began.