Anger is an emotional reaction that impacts the body. A person experiencing anger will also experience physical conditions, such as increased heart rate, elevated blood pressure, and increased levels of adrenaline and noradrenaline.
Parents often mistake this soiling as a sign of diarrhea. Other causes of constipation in children include: 1  a low-fiber diet. 2  certain medications or drugs, such as antacids, opiates and antidepressants. 3  diseases, such as Hirschsprung disease, diabetes and Down syndrome. 4  anatomic abnormalities, such as a birth defect.
Children become constipated for a number of reasons, including eating too little fiber, drinking too little liquid, taking in too much milk, or purposely trying to hold in their stool if they've had a painful experience while having a bowel movement or while they are in the process of learning to be potty-trained.