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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, although others might simply feel strange sensations. [1] In many people, it is elicited by bending ...
The idea to use electroshock on humans came to Cerletti when he saw how pigs were given an electric shock before being butchered to put them in an anesthetized state. [19] Cerletti and Bini practiced until they felt they had the right parameters needed to have a successful human trial.
An electrical injury, (electric injury) or electrical shock (electric shock) is damage sustained to the skin or internal organs on direct contact with an electric current. [ 2 ] [ 3 ] The injury depends on the density of the current , tissue resistance and duration of contact. [ 4 ]
The abnormal sensations are caused by lesions of the peripheral or central sensory pathways, and are described as painful feelings such as burning, wetness, itching, electric shock or pins and needles. Both Lhermitte's sign and painful dysesthesias usually respond well to treatment with carbamazepine, clonazepam or amitriptyline.
If the person has myelopathy, there will be slow abduction and flexion of the fingers on the ulnar side. The degree of loss of sensation may be different on both upper limbs. [2] Lhermitte sign is performed by asking a person to gently extend the neck. Those with cervical myelopathy will produce a feeling of electrical shock down the spine or arms.
Similar brief shocks can be experienced when any other nerve is tweaked (e.g. a pinched neck nerve may cause a brief shock-like paresthesia toward the scalp). In the older age group, spinal column irregularities may tweak the spinal cord briefly when the head or back is turned, flexed, or extended into brief uncommon positions (Lhermitte's sign).
The feeling experienced by the individual is described as uncontrollable jolts common to receiving a mild electric shock. [5] The sudden jerks and twitching of the body can often be so severe that it can cause a small child to fall. A myoclonic seizure (myo "muscle", clonic "jerk") is a sudden involuntary contraction of muscle groups. The ...
It often presents as pain [1] but may also present as an inappropriate, but not discomforting, sensation. It is caused by lesions of the nervous system, peripheral or central, and it involves sensations, whether spontaneous or evoked, such as burning, wetness, itching, electric shock, and pins and needles. [1]