- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
An incurable terminal disease which attacks the brain and central nervous system. Symptoms visible by its final stage include coughing, pain, shortness of breath, and irritability and other erratic behavior.