Alter Aeon Online Help

Keywords are:  'debuff nauseated nauseous'

Toxic damage, poisons and certain illnesses can leave living
creatures feeling sick to their stomach. Subjects have difficulty
concentrating and are prone to failing spells and skills more often.

Creatures that are nauseous also become more vulnerble to toxic
damage, and have difficulty eating and drinking. Creatures that eat
corpses may not be able to do so when nauseated. Raised ghouls do
more damage to nauseated creatures.

Nausea can be treated by most spells or skills that help with
poisoning. Saving poison will help prevent you from becoming
nauseated.