Visual extinction has the characteristic symptom of difficulty to perceive contralesional stimuli when presented simultaneously with an ipsilesional stimulus, but the ability to correctly identify them when not presented simultaneously.

It was triggered by three characteristic symptoms of hubris: excessive self-confidence, restlessness and inattention to detail.

Physical examination reveals characteristic symptoms of the condition especially the abnormalities in the skin surface of newborns.

Characteristic symptoms include rhabdomyolysis (breakdown of muscle fibers and subsequent release of myoglobin), myoglobinuria, recurrent myalgia (muscle pain) and weakness.

Characteristic symptoms include jaundice, fever, abdominal pain, and in severe cases, low blood pressure and confusion.