 [ Symptoms ] 14mo boy diarrhea x 2days testicle now swollen and painful diarrhea greenish white [ Disease ] this certainly merits a call to the pediatrician he or she may want to examine your son to discover what is going on here diarrhea should not cause the scrotum to swell this symptom may be completely unrelated to the diarrhea or there could be some sort of injury to the child is testes that is causing the diarrhea either way you want to get this assessed i would suggest you call your pediatrician as soon as possible meanwhile keep your son hydrated by providing plenty of fluids wishing you all the best