<unk> 's sign (also referred to as rebound tenderness or the Shyotkin–Blumberg sign) is a clinical sign in which there is pain upon removal of pressure rather than application of pressure to the abdomen. (The latter is referred to simply as abdominal tenderness.) It is indicative of peritonitis. It was named after German surgeon Jacob Moritz<unk> .
Blumberg sign
Bing's sign
Claybrook sign
Pemberton's sign
Westermark sign
Lincoln sign
Boas' sign
Hoover's sign 