The abbreviation for luteinizing hormone.
a tingling shocklike sensation passing down the arms or trunk when the neck is flexed. It is a nonspecific indication of disease in the cervical (neck) region of the spinal cord. Causes include multiple sclerosis, cervical *spondylosis, and deficiency of vitamin B12. [J. Lhermitte (1877–1959), French neurologist]... lhermitte’s sign