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Related to Lhermitte sign: Uhthoff's phenomenon
electriclike sensations shooting down the back and limbs when the neck is flexed (actively or passively) and sometimes when it is rotated; due to a cervical cord lesion; most often identified with multiple sclerosis.
Lhermitte signNeurology Flexion of the neck evokes abrupt spasms over the body, a finding typical of multiple sclerosis as well as cervical spine disease
Lher·mitte sign(lār-mēt' sīn)
Sudden electriclike shocks extending down the spine on flexing the head.
Lhermitte,Jean, French neurologist, 1877-1959.
Lhermitte sign - sudden electriclike shocks extending down the spine on flexing the head.