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.
Key facts. 1  Lead is a cumulative toxicant that affects multiple body systems and is particularly harmful to young children. 2  Childhood lead exposure is estimated to contribute to about 600 000 new cases of children developing intellectual disabilities every year. 3  Lead exposure is estimated to account for 143 000 deaths per year with the highest 4  ... A