Ernest-Charles Lasègue

Ernest-Charles Lasègue (1816 – 1883)

Ernest-Charles Lasègue (1816 – 1883) was a French Physician.

Credited with being one of those who described anorexia nervosa in 1873, which he called “hysterical anorexia.”

In 1877, along with Jules Philippe Falret (1824-1902) first described the concept of Folie à deux, initially termed Lasègue-Falret syndrome.

  • Born September 5, 1816 in Paris
  • Died 20 March 1883
Medical Eponyms
Lasègue sign (1864)

Patient supine with hip flexed – dorsiflexion of the ankle causes pain or muscle spasm in posterior thigh indicating lumbar root or sciatic nerve irritation

Lasègue-Falret syndrome (1877) [*aka Folie à deux] psychiatric syndrome in which symptoms of a delusional belief and hallucinations are transmitted from one individual to another.

Other eponyms
  • Lasègue manoeuvre: test of bilateral pulmonary expansion
  • Lasègue syndrome I: archaic, persecution mania (1852)
  • Lasègue syndrome II: anaesthetic induced conversion hysteria (1864)
Major Publications

eponymictionary CTA


the person behind the name

BA MA (Oxon) MBChB (Edin) FACEM FFSEM. Emergency physician, Sir Charles Gairdner Hospital.  Passion for rugby; medical history; medical education; and asynchronous learning #FOAMed evangelist. Co-founder and CTO of Life in the Fast lane | Eponyms | Books | Twitter |

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