Unwelcome Guests

From publisher blurb: Unwelcome Guests introduces new parasites for use in your Shadow of the Demon Lord games. The most obvious use of the material contained in this supplement is to infest the player characters with a delightful assortment of disgusting ailments, but you can also use these parasites as weaknesses for foes, hooks for adventures you create, or as set dressing for the places your groups explore.