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.
Lead is toxic to nerve cells, especially in children. Aluminium powder, used as a stabiliser to stop the colours bleeding, is also toxic. Cancer Research UK states that a persistent hoax claims that lipsticks contain lead and therefore cause cancer. But for a hoax, the claim has had considerable attention.