Problem: A positive Rovsing's sign is characterized by right lower abdominal pain upon palpation of the left side of the lower abdomen. Prehn's sign is used to determine if the patient has testicular torsion or epididymitis. Murphy's sign is elicited in patients with acute cholecystitis by asking the patient to take in and hold a deep breath while palpating the right subcostal area. The psoas sign, also known as Cope's sign or Obraztsova's sign, is used to detect for pathology in the abdomen and commonly is associated with appendicitis. Need Professional Help?