- You might also be looking for the Tarellian plague.
The Terrellian plague was a devastating viral infection, renowned for the excruciating discomfort its victims suffered.
The first symptoms of Terrellian plague was a minor headache; shortly later the symptoms became much, much worse. (ENT: "Singularity")
In the anti-time future (c. 2395), experienced by Captain Jean-Luc Picard, the Terrellian plague had spread to Romulus. Only a few medical ships were allowed enter to treat the victims. (TNG: "All Good Things...")
It is often used in hyperbole or as an exaggerating comparative: "It's heartburn, Jean-Luc Picardnot the Terrellian plague." (VOY: "Message in a Bottle")