 [ Symptoms ] my son has a bulge on his leg across from his penis that hurts to gently touch any ideas what this might be  the bulge is about the size of a half dollar and when he gets up in the morning he limps because it hurts so much his dad thinks it might be hernia but i just do not know i also do not know if that is the groin or not [ Disease ] viral gastroenteritis is very prevalent this time of year please keep in mind that this is just a blind guess since i have no way of examining you the most important thing is fluid replacement you must stay well hydrated do not eat very much for a few more days most of these viral infections resolve in about 7 10 days so hang in there at least you are not vomiting so be greatful in my practice we do not treat diarrhea with drugs at least at this stage but your doctor may have other ideas your stomach pain may be cramps or gas but if you are concerned the only way that you can be sure is to see your medical provider so you can be examined abdinal painad diahrea