Lower-right abdominal pain has many possible causes, some of which include appendicitis, kidney infection, endometriosis and diverticulitis, according to Mayo Clinic. It may also be a sign of cancer.
Appendicitis, an inflammation of the appendix, is a medical emergency that may lead to a life-threatening condition known as peritonitis if left untreated, as stated by WebMD. Patients may initially experience a dull pain near the upper abdomen that becomes sharp as it reaches the lower-right abdomen. Other symptoms include vomiting, loss of appetite, abdominal swelling and fever.
Kidney infections occur when a urinary tract infection progresses to one or both of the kidneys. Its symptoms may include flank pain, back pain, fever, nausea and pain during urination, according to WebMD.
Endometriosis is a condition in which the uterine lining begins growing outside the uterus and is common in women in their 30s and 40s, as explained by the Office on Women's Health. Its symptoms include chronic pelvic pain, severe menstrual cramps, intestinal pain and a deep pain after or during sex.
Diverticulitis refers to the formation of bulging pouches that form in the lining of the digestive system that become infected or inflamed, as stated by Mayo Clinic. Symptoms include severe abdominal pain, a change in bowel habits and nausea.