Deafness-small bowel diverticulosis-neuropathy syndrome (DSDN) is a rare genetic disorder characterized by hearing loss, small bowel diverticulosis, and peripheral neuropathy. It is caused by a mutation in the GJB2 gene, which is responsible for the production of a protein called connexin 26. This protein is important for the normal functioning of the inner ear and the peripheral nervous system. Symptoms of DSDN include hearing loss, balance problems, and difficulty walking. Other symptoms may include abdominal pain, constipation, and diarrhea. Treatment for DSDN is focused on managing the symptoms and may include hearing aids, physical therapy, and medications.