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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 ...
Lhermitte's sign is an electrical sensation that runs down the back and into the limbs and is produced by bending the neck forward. The sign suggests a lesion of the dorsal columns of the cervical cord or of the caudal medulla , correlating significantly with cervical MRI abnormalities. [ 111 ]
Sensory and movement disturbances have also been reported, including imbalance, tremors, vertigo, dizziness, and electric-shock-like experiences in the brain, often described by people who have them as brain zaps. These "brain zaps" have been described as an electric shock felt in the skull, potentially triggered by lateral eye movement, and at ...
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).
Often, patients can only recognize their prodrome symptoms when they get to the pain phase and look back, Singh says. During a prodrome period, the Mayo Clinic and American Migraine Foundation say ...
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.
This includes aching teeth, ear aches, feeling of fullness in sinuses, cheek pain, pain in forehead and temples, jaw pain, pain around eyes, and occasional electric shock-like stabs. Unlike typical neuralgia, this form can also cause pain in the back of the scalp and neck.
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