Lhermitte’s sign
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Lhermitte’s sign

What is a Lhermitte’s sign? Lhermitte’s sign, also known as the “barber chair phenomenon,” is a neurological symptom characterized by an electric shock-like sensation that travels down the spine and into the limbs, usually triggered by neck flexion. The sensation often occurs when a person bends their head forward, backward, or turns it to the…