1. Body Dysmorphic

7. Its sufferers are tormented by the notion that some part of their body - hair, nose, skin, hips – is ugly, abnormal or deformed, when it is actually not.

8. BDD usually sets in between the ages of 15 and 17

9. Like the emperor's new clothes, these bodily "flaws" are invisible to others. Nevertheless, people with BDD become so convinced of their ugliness, they often live like vampires, sneaking out only during the night, either shrinking from mirrors or trapped in their glare for hours on end, transfixed by the horror of their own reflections.

10. The disorder leaves the majority of suffers unable to perform well at a job or sustain a romantic relationship. A third become housebound. Almost one-quarter attempts suicide.