Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Friedreich's sign
Introduction
In medicine, Friedreich’s sign is the diastolic collapse of the cervical veins due to adhesion of the pericardium, leading to a dramatic Y descent in jugular venous pressure, and may be seen in constrictive pericarditis with a calcified pericardium, and in tricuspid regurgitation.