i don't know the age of your child or anything about his medical history but a small amount bright red blood is often an anal fissure (a tiny tear in the anal ring) but that is going to take an examination to determine. there are other causes of course like polyps so seeing a medical provider is the best way to go.
my child had blood in his stool. should i wait to see if the next one is normal or take him to see the dr?