### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My son is 8 months old. He was born 6 weeks premature and spent the first month in the NICU. He is breastfed fully until 6 months and now eats fruit, vegies and rice cereal. He had had blood and/or mucus in his stool a lot in March/April. We figured out if I eliminated all milk, lactose and soy from my diet that the blood disappeared. At least this is what I thought. We just found out that he has iron deficiency anemia. I also found blood and mucus in his stool again this morning. I am wondering if the blood has been there on and off for this long and it either changed color or I just didnt notice it. What are the causes of blood in stool? Could this cause the iron deficiency anemia? He has been taking iron now for 2 days. What should I do now that I have seen blood again?

### output:

Hi I am Chat Doctor. . Most common cause in a well thriving child is food allergy, that could be cows milk, wheat(gluten), nuts depends on the allergen. Or a bacterial infection (dysentery). But in dysentery kids usually have fever, abdominal pain and vomiting . If child is having constipation causes like rectal ulcer, fissure should be ruled out. There are few serious conditions, but they are so rare . They are uncommon in a well thriving child. Inflammatory bowel disease (IBD)is one such condition, but I have seen only 1 infant with IBD in past 9yrs of pediatric practice. I can reassure that this could be normal if baby is otherwise doing well. Find out the food and avoid it, it's the best way to diagnose allergy .wait and watch for recurrence of symptoms. Iron deficiency anemia is common in this age group, as mothers milk is not a good source of iron and bodies normal iron stores deplete by the age of 6 months, it is good that u start iron supplements and iron rich food. It is difficult to comment the relationship between iron deficiency and blood in stools. But occult blood loss is definitely a cause of anemia in conditions like nickels diverticulum in a well thriving child. My best advice is avoided allergen, wait and watch, treat anemia. Follow up if symptoms recur or if anemia not improving. Thank you for using Chat Doctor 