Beevor's sign

external

• Synonyms

  • Weakness of lower abdominal muscles
  • Lower rectus abdominis weakness

• Causes

  • Spinal trauma
  • Motor neurone disease

• Parents

  • Neurological sign

• Description

  • "Spinal cord injury between T10 and T12 levels. Upper part of Rectus abdominis is intact but the lower part is weak. Ask patient to raise his head as he lies supine on bed- only the upper part of the muscle contracts pulling the umbilicus toward the head. The sign has also been observed in amyotrophic lateral sclerosis."