It is also important to consider the presence or absence of accompanying medical issues in order to precisely identify the cause and to help formulate the optimal treatment for pain in the buttocks.
The abdominal cavity contains the stomach, intestines, liver, gallbladder, kidneys, spleen and pancreas. Side pain can be a symptom of a wide variety of mild to serious diseases, disorders and conditions, such as infection, infarction, inflammation, indigestion, trauma, intestinal obstruction, and cancer.
The most common medical conditions that can cause right side abdominal pain are the following: [1] 1  Gallstones. 2  Appendicitis. 3  Kidney stones.  Constipation (See the difference between constipation and 1  obstipation) Pregnancy.  Kidney 1  infection. Hepatitis ulcerative disease.  Ulcerative colitis.