Typical angina is described as a heavy, squeezing sensation behind or lateral to the sternum, that patients describe as an elephant stiing on the chest , that is ellicited by physical activity or stress, relieved by resting or nitroglycerin. Nevertheless, many patients, particularly women, present with atypical chest pain features. Pain that lasts seconds to days, worsens with movements or respiration, and can be reproduced in the surface of the chest wall is rarely originated from blocked arteries of the heart. Hope that helps Dr Brenes-Salazar Mayo Clinic Rochester