Magnan's sign
   Also known as Magnan-Saury's sign and cocaine bugs. The eponym Magnan's sign refers to the French alienist Jacques Joseph-Valentin Magnan (1835-1916), who described the concomitant phenomenon in 1889 in a paper co-authored by a pupil named Saury (hence the second eponym, Magnan-Saury's sign). Both eponyms refer to a crawling, " tactile hallucination of a foreign body under the skin that is associated with the chronic use of cocaine. Save the association with cocaine, Magnan's sign is comparable with "formication.
   References
   Magnan, V., Saury, M. (1889). Trois cas de cocainisme chronique. Comptes Rendus Hebdomadaires des Séances et Mémoires de la Société de Biologie, 41, 60-63.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • Magnan's sign — is a clinical sign in which people with cocaine addiction experience paraesthesia which feels like a constantly moving foreign body, such as fine sand or powder, under the skin.[1] The sign is named after Valentin Magnan. External links Magnan s… …   Wikipedia

  • Magnan-Saury's sign —    see Magnan s sign …   Dictionary of Hallucinations

  • Sign — Any abnormality that indicates a disease process, such as a change in appearance, sensation, or function, that is observed by a physician when evaluating a patient. * * * 1. Any abnormality indicative of disease, discoverable on examination of… …   Medical dictionary

  • Valentin Magnan — (1835 1916) was a French psychiatrist who was a native of Perpignan. He studied medicine in Lyon and Paris, where he was a student of Jules Baillarger (1809 1890) and Jean Pierre Falret (1794 1870). From 1867 until the end of his career he was… …   Wikipedia

  • Street sign theft — occurs when street signs are stolen, often to be used as decorations, but also sometimes to avoid obeying the law by claiming later the sign was not there.Fact|date=January 2008 Although the theft often seems arbitrary, unusual or amusing signs… …   Wikipedia

  • cocaine bugs —    Also known as Magnan s sign and Magnan Saury s sign. All three terms refer to a * tactile hallucination consisting of a crawling foreign body beneath or upon the skin that is associated with the chronic use of cocaine. Except for their… …   Dictionary of Hallucinations

  • formicative hallucination —    Also referred to as formication, dermatozoic hallucination, and insect hallucination. The terms formication and formicative hallucination are indebted to the Latin noun formica, which means ant. All of the above four terms are used more or… …   Dictionary of Hallucinations

  • tactile hallucination —    Also known as tactile phantasma, haptic hallucination, touch hallucination, and hallucination of touch. The term tactile hallucination is indebted to the Latin verb tangere, which means to touch. It refers to a bodily sensation seemingly… …   Dictionary of Hallucinations

  • cocaine hallucinosis —    The term cocaine hallucinosis refers to the various hallucinatory phenomena associated with the chronic use of cocaine (as in a cocaine run or cocaine binge , which are both characterized by the prolonged consumption of high doses of cocaine) …   Dictionary of Hallucinations

  • History of Freemasonry in France — Freemasonry in France has a long and varied history.HistoriographyUntil the mid 20th century, the history of Freemasonry was excluded from classic style history syllabus in universities. Particularly in France, Masonic historiography was thus… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”