Pain in the arms, neck, jaw, shoulder or back pain can be angina although it is not typical stable angina that occurs with exertion and relief at rest. Because your husband's coronary occlusion without angina could be the condition has slipped into unstable angina. Unstable angina occurs even at rest; there Is a change in the usual pattern of angina and is unexpected. It is usually more severe and lasts longer than stable angina, maybe as long as 30 minutes. May not disappear with rest or use of angina medication. Your husband should see a doctor to rule out a heart attack.