eMedicine - Scorpion Sting: Article by David Cheng, MD.
eMedicine Health - Scorpion Sting Overview: Features species, preventions, symptoms, and treatment.
Scorpion Stings and Venoms: Photographs of highly venomous African scorpions, prevention, symptoms, and treatment.
The MerckManual: Scorpion Stings: Short article on the symptoms and treatment.