Dysentery

 is a condition in Fallout 76 and Fallout: The Roleplaying Game.

Fallout 76
can be inflicted by eating raw carrots, spoiled meat, or swimming in toxic water, and results in periodic water loss.

Fallout: The Roleplaying Game
can be inflicted by any of the random causes of disease denoted in the Core Rulebook, and results in the time taken on each step of thirst to be halved.

Appearances
appears in Fallout 76 and Fallout: The Roleplaying Game.