The Cymbeline blood burn was a disease that Vulcans could get. The blood burn could turn a Vulcan's normally green blood red.

In 2155, Doctor Sivath said that the only way "Trip" Tucker's blood could be red and him be a Vulcan was to have the Cymbeline blood burn. (ENT novel: Beneath the Raptor's Wing)

This disease may have been intended to be the Symbalene blood burn.