yourplayersaidwhat:

Ranger: Okay, I do a medicine check… 18.
DM: You know that this is Sewer Fever. If untreated after 48 hours, a fever will set in that does constitution damage. However, this is easily treated by a temple or healer. It’s not serious.
Ranger: Great, thanks.
Ranger to Druid: Okay, so we’re going to have to amputate your leg.