<s>[INST] I have a six year old son who has been having pain in his abdomen, usually at bed time so i thought it was just to get out of bed. Two days ago his stool had some streaks of bright red blood and it was floating, a pale gray color. His stool is usually pale gray to tan and occasionally floats. He hasn t wanted to eat much the last three or four weeks. I thought it was because his molars are coming in and i didn t want to push him. He weighs 43 pounds and has always been tiny, hes very active. Also possibly unrelated, for the last month he s been sleep walking and having terrible night terrors. Could the two be related...He has a dr appointment on sept 13 for a physical should i wait? any ideas. [/INST] Brief answer:Stomach infection or anal fissure or tags. Detailed answer:Hi, welcome to HCM. Blood in stool could be due to stomach infection or anal fissure or tags. In case of stomach infection, there is loose stools, fever and pain abdomen while in anal fissure or tags, there is bright red blood with no other symptoms. In my opinion, a stool routine microscopy test should be done and examination by surgery specialist should be done. I hope this will help you. Wishing your child good health. Take care. Regards:Dr Deepak Patel, MD Pediatrics </s>