Jacques Jean Lhermitte () (20 January 1877 – 24 January 1959) was a French

neurologist Neurology (from , "string, nerve" and the suffix -logia, "study of") is the branch of medicine dealing with the diagnosis and treatment of all categories of conditions and disease involving the nervous system, which comprises the brain, the ...

and

neuropsychiatrist Neuropsychiatry is a branch of medicine that deals with psychiatry as it relates to neurology, in an effort to understand and attribute behavior to the interaction of neurobiology and social psychology factors. Within neuropsychiatry, the mind i ...

Early life and education

Lhermitte was born in Mont-Saint-Père,

Aisne Aisne ( , ; ; ) is a French departments of France, department in the Hauts-de-France region of northern France. It is named after the river Aisne (river), Aisne. In 2020, it had a population of 529,374. Geography The department borders No ...

, son of

Léon Augustin Lhermitte Leon, Léon (French) or León (Spanish) may refer to: Places Europe * León, Spain, capital city of the Province of León * Province of León, Spain * Kingdom of León, an independent state in the Iberian Peninsula from 910 to 1230 and again fro ...

, a French realist painter. Following his early education at Saint-Etienne, he studied in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

and graduated in medicine in 1907. He specialised in

neurology Neurology (from , "string, nerve" and the suffix wikt:-logia, -logia, "study of") is the branch of specialty (medicine) , medicine dealing with the diagnosis and treatment of all categories of conditions and disease involving the nervous syst ...

and became ''Chef-de-clinique'' (resident) for

nervous diseases This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria ...

in 1908, ''Chef de laboratoire'' in 1910, and ''professeur agrégé'' for

psychiatry Psychiatry is the medical specialty devoted to the diagnosis, treatment, and prevention of deleterious mental disorder, mental conditions. These include matters related to cognition, perceptions, Mood (psychology), mood, emotion, and behavior. ...

1922.

Career

Lhermitte became head of the Dejerine Foundation, sponsored by

Joseph Jules Dejerine Joseph Jules Dejerine (3 August 1849 – 26 February 1917) was a French neurologist. Early life and education Dejerine was born to French parents in Geneva, Switzerland, where his father was a carriage proprietor. During the Franco-Prussian War ...

, and clinical director at the

Pitié-Salpêtrière Hospital Pitié-Salpêtrière University Hospital (, ) is a charitable hospital in the 13th arrondissement of Paris. It is part of the AP-HP Sorbonne University Hospital Group and a teaching hospital of Sorbonne University. History The Salpêtrière ...

. During

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

, Lhermitte studied spinal injuries and became interested in

neuropsychiatry Neuropsychiatry is a branch of medicine that deals with psychiatry as it relates to neurology, in an effort to understand and attribute behavior to the interaction of neurobiology and social psychology factors. Within neuropsychiatry, the mind i ...

. This led to publications on visual

hallucinations A hallucination is a perception in the absence of an external stimulus that has the compelling sense of reality. They are distinguishable from several related phenomena, such as dreaming ( REM sleep), which does not involve wakefulness; pse ...

of the self. A deeply religious man, he explored the common territory between

theology Theology is the study of religious belief from a Religion, religious perspective, with a focus on the nature of divinity. It is taught as an Discipline (academia), academic discipline, typically in universities and seminaries. It occupies itse ...

and

medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...

, and this led him to interesting studies on

demonic possession Spirit Possession is an altered state of consciousness and associated behaviors which are purportedly caused by the control of a human body and its functions by Supernatural#Spirit, spirits, ghosts, demons, angels, or Deity, gods. The concept ...

and

stigmatisation Stigmata (, plural of , 'mark, spot, brand'), in Catholicism, are bodily wounds, scars and pain which appear in locations corresponding to the crucifixion wounds of Jesus Christ: the hands, wrists, feet, near the heart, the head (from the cro ...

Medical eponyms

Lhermitte was a clinical neurologist. A number of medical

eponym An eponym is a noun after which or for which someone or something is, or is believed to be, named. Adjectives derived from the word ''eponym'' include ''eponymous'' and ''eponymic''. Eponyms are commonly used for time periods, places, innovati ...

s bear his name:Whonamedit? A Dictionary of Medical Eponyms (n.d.)
"Jacques Jean Lhermitte".
Retrieved August 1, 2019. * Lhermitte-Cornil-Quesnel syndrome: A slowly progressive pyramido

pallidal The globus pallidus (GP), also known as paleostriatum or dorsal pallidum, is a major component of the subcortical basal ganglia in the brain. It consists of two adjacent segments, one external (or lateral), known in rodents simply as the globus p ...

degeneration * Lhermitte-Duclos syndrome: A rare

pathologic ''Pathologic'' ( rus, Мор. Утопия, Mor. Utopiya, ˈmor ʊˈtopʲɪjə, , More. Utopia – a pun on Thomas More's ''Utopia (More book), Utopia'' and the Russian word for "plague") is a 2005 Survival game, survival game developed by Russ ...

entity with

hypertrophy Hypertrophy is the increase in the volume of an organ or tissue due to the enlargement of its component cells. It is distinguished from hyperplasia, in which the cells remain approximately the same size but increase in number. Although hypertro ...

chiefly of the

stratum granulosum The stratum granulosum (or granular layer) is a thin layer of cells in the epidermis lying above the stratum spinosum and below the stratum corneum ( stratum lucidum on the soles and palms).James, William; Berger, Timothy; Elston, Dirk (2005) ''A ...

of the

cerebellum The cerebellum (: cerebella or cerebellums; Latin for 'little brain') is a major feature of the hindbrain of all vertebrates. Although usually smaller than the cerebrum, in some animals such as the mormyrid fishes it may be as large as it or eve ...

* Lhermitte-Lévy syndrome: A syndrome of slowly progressing paralysis after a

stroke Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...

* Lhermitte-McAlpine syndrome: A combined pyramidal and extrapyramidal tract syndrome in middle-aged and elderly persons. * Lhermitte peduncular hallucinosis: Purely visual hallucinations recognized as unreal, abnormal phenomena (preserved insight). *

Lhermitte sign In neurology, Lhermitte phenomenon, also called the barber chair phenomenon, is an uncomfortable "electrical" sensation that runs down the back and into the limbs. The sensation can feel like it goes up or down the spine. It is painful for some, ...

: Flexion of the neck in patients with

multiple sclerosis Multiple sclerosis (MS) is an autoimmune disease resulting in damage to myelinthe insulating covers of nerve cellsin the brain and spinal cord. As a demyelinating disease, MS disrupts the nervous system's ability to Action potential, transmit ...

produces electric shock-like sensations that extend down the

spine Spine or spinal may refer to: Science Biology * Spinal column, also known as the backbone * Dendritic spine, a small membranous protrusion from a neuron's dendrite * Thorns, spines, and prickles, needle-like structures in plants * Spine (zoology), ...

and may shoot into the limbs * Lhermitte syndrome: A rare

syndrome A syndrome is a set of medical signs and symptoms which are correlated with each other and often associated with a particular disease or disorder. The word derives from the Greek language, Greek σύνδρομον, meaning "concurrence". When a sy ...

of ocular palsy with

nystagmus Nystagmus is a condition of involuntary (or voluntary, in some cases) Eye movement (sensory), eye movement. People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in visual impairment, re ...

and

paralysis Paralysis (: paralyses; also known as plegia) is a loss of Motor skill, motor function in one or more Skeletal muscle, muscles. Paralysis can also be accompanied by a loss of feeling (sensory loss) in the affected area if there is sensory d ...

adduction Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relativ ...

during attempted lateral deviation of the eyes * Lhermitte-Trelles syndrome' A syndrome characterized by

lymphoblast __NOTOC__ A lymphoblast is a modified naive lymphocyte with altered cell morphology. It occurs when the lymphocyte is activated by an antigen and increased in volume by nucleus and cytoplasm growth as well as new mRNA and protein synthesis. The ly ...

ic infiltration of the

peripheral nervous system The peripheral nervous system (PNS) is one of two components that make up the nervous system of Bilateria, bilateral animals, with the other part being the central nervous system (CNS). The PNS consists of nerves and ganglia, which lie outside t ...

, associated with paralysis and amyotrophy

Bibliography

* ''Techniques anatomo-pathologiques du système nerveux''.

, 1914. * ''Psycho-névroses de guerre''.

, 1916. * ''Les blessures de la moelle épinière''.

, 1917. * ''La section totale de la moelle épinière''.

, 1918. * * ''Les fondements biologiques de la psychologie''.

, 1925. * ''Les hallucinations: clinique et physiopathologie''.

, 1951. * ''True and false possession.'' Translated by the Hon. Patrick John Hepburne-Scott. New York: Hawthorn Books, 1963;

OCLC OCLC, Inc. See also: is an American nonprofit cooperative organization "that provides shared technology services, original research, and community programs for its membership and the library community at large". It was founded in 1967 as the ...

Number 331062. London: Burns & Oates, 1963. Original edition: ''Vrais et faux possédés.'' Paris: Fayard, 1956;

Number 13449338.

References

{{DEFAULTSORT:Lhermitte, Jean History of neuroscience 1877 births 1959 deaths French psychiatrists French neurologists