Symptoms. Symptoms of heart palpitations may include a passing sensation of a pounding, rapid, fluttering, or skipped heartbeat. These sensations are usually felt in the chest but may also be felt in the neck and/or the throat.
Below are some of the possible illnesses and medical conditions that may cause pain under the rib cage. 1  Liver damage-Liver damage or infections and inflammation of the liver can cause pain under right rib cage. 2  Hepatitis is a resulting inflammation of the liver. 3  Hepatitis is caused by alcoholism and viral infections.
Multiple causes.: Pain below left side of rib cage maybe muscular in origin, and/or related to the ribs. Muscle strain is possible. If is worsening or not resolving you must get checked. Other possibilities include stomach, liver, or even spleen disorders.