Neurologic conditions in adults associated with acute or chronic exposure to lead or any of its salts. The most common lead related neurologic syndrome in adults consists of a polyneuropathy involving motor fibers. This tends to affect distal nerves and may present as wrist drop due to radial neuropathy. Additional features of chronic lead exposure include anemia; constipation; colicky abdominal pain; a bluish lead line of the gums; interstitial nephritis (nephritis, interstitial); and saturnine gout. An encephalopathy may rarely occur. (From Adams et al., Principles of neurology, 6th ed, p1212)