Bendal Fever was a type of disease.
History and specifics[]
At some point in the 2250s decade, Harr Harath contracted Bendal Fever in an attempted conquest of the planet Bendalia. When his own doctors were unable to treat him, his ministers appealed to the Federation for help, which arrived in the form of the Federation starship USS Enterprise, under the command of Captain Christopher Pike. Dr. Phillip Boyce treated Harath despite his personal feelings towards the man. (TOS novel: Legacy)