17 Symptoms of Immune System Problems

Bathroom Problems

Diarrhea that lasts more than 2 to 4 weeks can be a warning sign that your immune system is harming the lining of your small intestine or digestive tract. Constipation is a concern, too. If your bowel movements are hard to pass, very firm, or look like they’re made up of small rabbit pellets, your immune system may be forcing your intestine to slow down. Other possible causes include bacteria, viruses, and other health conditions.