This updated and expanded Fourth Edition is an alphabetical listing of commonly presenting neurological signs designed to guide the physician toward the correct clinical diagnosis. The dictionary is focused, problem-based and concise.   The structured entries in this practical, clinical resource provide summaries of a wide range of neurological signs. Each entry includes: a definition of the sign; a brief account of the clinical technique required to elicit the sign; a description of the other signs which may accompany the index sign; an explanation of pathophysiological and/or pharmacological background; differential diagnosis; brief treatment details; and where known, the neuroanatomical basis of the sign.