This skill is identical to Cure Disease, except that it does not confer any healing ability. A character with this skill can recognise the symptoms of a common disease automatically and those of a rare disease on a successful Int test, modified as the GM sees fit to reflect the rarity of the ailment. It may also be used to recognise whether a disease is genuine or feigned.
Once a disease has been successfully identified, the character with the skill may make a second Int test to determine whether they know of any treatments for the disease. However, these will only be in general terms ("I've heard that swallowing ivy and leeches can soothe the swelling") without any details on how the treatment should be carried out.
Characters with the skill Cure Disease automatically have all the benefits of this skill.