Mendel-Bekhterev Symptom

Mendel-Bekhterev symptom

Mendel-Bekhterev symptom is a neurological symptom described by German neurologist Karl Mendel and Russian neurologist and psychiatrist Vladimir Bekhterev.

The symptom is that when you tap the crown and back of the head with a hammer, a vibration sensation occurs that spreads down the spine. This phenomenon indicates damage to the pyramidal tracts of the spinal cord.

The Mendel-Bekhterev symptom is often found in degenerative diseases of the nervous system, such as amyotrophic lateral sclerosis, syringomyelia, and disseminated sclerosis. It can also occur with spinal cord injuries.

Thus, the Mendel-Bekhterev symptom has important diagnostic value for identifying lesions of the central nervous system.

Mendel's - Bechterev's symptom (Mendelism-Bachstedism syndrome) is a group of motor disorders that occur after parenchymal damage (stroke, cerebral infarction or infection) of one or more conductors of the brain supporting limb movements in the lateral columns of the spinal cord. Motor disorders include motor apraxia of the upper and lower extremities, that is, the inability to perform monotonous movements without visual control and perseveration of movements (involuntary repetition of a started movement after long pauses in the execution of the program). One of the first descriptions of this disease belongs to the Russian psychiatrist P.M. Burnet, who published his work “Melancholia and Leprosy” in the journal “Modern Medicine” in 1891. The symptoms described by P. M. Burnet were based on manifestations of a movement disorder with hand movements without a visual stimulus. Then, in his studies, A. N. Burnet described in detail a number of other symptoms and combinations of movement disorders of different muscle groups, involving somatic manifestations in the picture. A.N. Burnet made suggestions about the localization of these lesions, including the central artery of the base of the brain.

When analyzing expert reports, it is impossible to say with certainty that