Pain on the right side can come from many different sources. Sometimes it is caused by a simple muscle strain. Other times it may point to an internal health issue. The discomfort can appear suddenly or develop slowly over time, and accompanying symptoms often help doctors identify the cause.
Muscle and posture related pain
Strained muscles or minor tears on the right side of the body are common after heavy lifting, sports, or repetitive movements. Back pain on the lower right side can also develop from poor posture, herniated discs, or pinched nerves. This type of pain may spread toward the hip or leg.
Digestive system causes
Appendicitis is one of the best known causes of sharp lower right abdominal pain. It often begins near the navel before settling on the right side and may come with fever, nausea, or vomiting.
Gallstones can trigger intense pain in the upper right abdomen, especially after eating. The discomfort may radiate to the back or shoulder.
Irritable bowel syndrome can also cause recurring right side abdominal pain, usually alongside bloating or changes in bowel habits.
Kidney and liver related pain
Problems affecting the right kidney, such as stones or infections, may cause pain in the right flank. Fever or changes in urination can appear at the same time.
Liver conditions like hepatitis may lead to pain in the upper right abdomen along with fatigue, loss of appetite, or yellowing of the skin and eyes.
Chest and heart related discomfort
In some cases, heart conditions can cause pain that spreads toward the right side of the chest. Lung infections such as pneumonia may also create right side chest pain, sometimes confused with heart or stomach issues.
Sudden pain versus long term pain
Sudden sharp pain often signals a condition that needs urgent medical attention. Persistent pain that lasts for weeks may relate to arthritis, nerve problems, or long term digestive disorders and should be evaluated by a doctor.
How doctors find the cause
A medical exam is usually the first step. Blood tests can reveal infection or inflammation. Ultrasound scans check the gallbladder, liver, and kidneys. CT scans or X rays may be used to examine internal organs and bones.