Leprosy

Leprosy wears down Strength, Intelligence, Willpower, Agility, Endurance, Personality, Speed, Luck, health, fatigue by 5 to 30 points each day, and never stops until it is cured.

Leprosy is an entry in the Diseases database.

A disease starts the day after infection. Each day it rolls its damage once and takes that much from every attribute and pool it names. A cure (a temple's, a potion, a spell) ends it, and healing a lost attribute does not. Characters of level 1 cannot catch one, and a full saving throw resists it outright.