Claustrophobia

You are uncomfortable in enclosed spaces.
Effect: You become shaken while in any space where you are within 10 feet of a wall or other solid surface on 2 or more sides, or if the ceiling is less than 10 feet above your head. (Such as while walking down a 20-foot-wide corridor or while you are in any room with a 10-foot-high ceiling.) Spells and effects that remove fear do not remove this condition.
Suggested Class/Race: Druids
Source: Dragon Magazine #324 (Class Acts - Flaws For Druids)