Perioral vasoconstriction in patient with exercise-associated collapse, or exercise-associated postural hypotension

Exercise-associated collapse (EAC), or exercise-associated postural hypotension, is marked by facial flushing combined with perioral vasoconstriction, as seen in the photograph above. The diamond-shaped configuration of perioral pallor is common in patients with EAC. The patient's eyes usually remain closed until they have recovered.