1 paroxysmal Pertaining to or marked by paroxysm; caused by paroxysms or convulsions of nature. 2  paroxysmal Specifically In geology: Relating to or produced by a violent convulsion of nature.
Inorganic lead compounds are Group 2A - Probably carcinogenic to humans. American Conference for Governmental Industrial Hygienists (ACGIH): A3 - Confirmed animal carcinogen. Teratogenicity / Embryotoxicity: DEVELOPMENTAL HAZARD. May harm the unborn child. Known to cause: learning disabilities, effects on behaviour.
Why Lead is So Dangerous for Children. Lead is a naturally occurring metal that was once commonly used in gasoline, paint and children's toys, and is still a part of batteries, pipes, pottery, roofing materials and cosmetics. Lead is known to cause damage to your brain and nervous system.