What could cause black, very solid and smalll stools in a child while having slight rash on back of knees?
Patient: My two year old has had black very solid small poo for about 5 days now. No diet changes or anything I cam think of.  He did have a slight rash on back of knees that looked a bit like ecceema last week - almost cleared up now but he never had that before.  Just want to make sure there is nothing underlying. Thanks Doctor: Hi...I don't think anything serious is happening in the kid. Just make sure if you are giving any iron supplements. This can make the stools hard and black. Otherwise if the kid is active and his usual self - you need not worry.regards - Dr. Sumanth