Precordial Catch Syndrome (PCS) .
It also occurs, though less frequently, in adults. PCS manifests itself as a very intense, sharp pain typically at the left side of the che…st which is worse when taking breaths. Patients often think that they are having a heart attack which causes them to panic. This typically lasts 30 seconds to 3 minutes, though some episodes last only a few breaths and in rare cases can last up to 30 minutes. In all cases the pain is resolved quickly and completely. source: wikipedia (MORE)