Sick

Sick is a status ailment in Mario & Luigi: Bowser's Inside Story. Certain enemy attacks, especially those from Blizzard Midbus, can cause Bowser to become Sick. He will have a blue glow around him and a runny nose. Every turn, Bowser will sneeze and lose a chunk of HP, much like Poison, although Bowser is the only one who can get Sick and he cannot be Poisoned in the traditional sense.

Trivia

 * The Sick status was a beta status condition in Paper Mario: The Thousand-Year Door.