Thief’s Burn (5e Disease)
From D&D Wiki
Thief’s burn is generally a disease put on objects of great value by powerful wizards to make sure that anyone but the owner who touches the item is infected. A spell like identify could reveal the disease.
Stage 1: On day 1 you start to dream of fires
Stage 2: On day 3 you become more aggressive
Stage 3: On the fifth day you burn to ashes
Thief’s burn can be cured with lesser restoration .