Lethargy is an affliction which temporarily disables the unique mental and physical traits of one's victim, nimble and quick-witted, until it is cured.
Adventurers can be delivered lethargy through Hypnosis skill and the two-handed specialisation of Weaponmastery. With this ability, HEWing either arm will give recurrent lethargy until such a time as all wrist fractures are cured.
Eating a ginseng root or a ferrum flake will cure the lethargy affliction.