Claustrophobia is an anxiety disorder in which someone has an intense and irrational fear of confined or enclosed spaces. A person who suffers from claustrophobia may break into a panic when inside a lift (elevator), a bus, an aeroplane, a room with lots of people or any confined space. What are the symptoms? These symptoms may be relevant to many types of phobias (irrational fears): -- Sweating -- Accelerated heart rate -- Hyperventilation, or 'over-breathing' -- Shaking -- Light-headedness -- Nausea -- Fainting -- Fear of actual harm or illness. A person with claustrophobia may: -- When entering a room, start checking for where the exits are. Position himself/herself near the exits. Feel very uneasy when all the doors are shut. -- Avoid driving or entering a car during times of day when traffic is most likely to be congested. -- Opt for using the stairs rather than the lift (elevator). The reason being fear, rather than the extra exercise. -- Stand near the door at a crowded party - even if it is a large and spacious room. -- Panic when a door is closed and he/she is inside (more severe).