Toxicological seizures: Causes
Physical exam   Wikipedia  
Organophosphates
Tricyclic antidepressants
Isoniazid, Insulin
Sympathomimetics
Camphor, Cocaine
Amphetamines
Methylxanthines
PCP, Propoxyphene, Phenol, Propranolol
Benzodiazepine withdrawal, Botanicals
Ethanol withdrawal
Lithium, Lidocaine
Lindane, Lead

 Mnemonic:
OTIS CAMPBELL