What Causes Upper Right Side Pain?

Some causes of upper right side pain include appendicitis, peptic ulcers and kidney stones, according to Mayo Clinic. However, there are many causes of upper right side pain, and some of them are not serious, such as gas pains and pulled muscles.

Appendicitis occurs when the appendix becomes inflamed, leading it to burst in some cases, explains Cleveland Clinic. Doctors do not know what causes appendicitis, which often occurs in children and young adults. Patients with the condition experience a lack of appetite, tenderness in the abdomen that increases with movement, and nausea and fever. Appendicitis requires immediate medical attention, and surgical removal of the appendix in severe cases.

Peptic ulcers develop in the stomach lining, small intestine and esophagus when stomach acids erode the tissues, notes Healthline. There are various factors that lead to peptic ulcers, including a Helicobacter pylori infection, excess alcohol intake, stomach cancer and radiation therapy. Symptoms of a peptic ulcer include burning abdominal pain, chest pain, nausea and vomiting. Doctors treat patients with peptic ulcers by addressing the underlying causes of their conditions. For example, patients who have a Helicobacter pylori infection are treated with antibiotics and protein pump inhibitors.

Kidney stones are crystallized chemicals that form when the chemicals become concentrated in urine, according to Cleveland Clinic. Most patients with kidney stones have a chemical abnormality that increases the risk of developing kidney stones. Kidney stones lead to various symptoms, including blood in the urine, severe pain in the side and a lack of urine flow. Most kidney stones can be removed through non-invasive procedures.