When you are delusional, you lose the ability to distinguish reality from fantasy. You know, like the “Birthers” right now. Sufferers stumble through life, constricted by pseudo-worlds of their own making. Although the term was first coined in 1977, symptoms of delusion have been recorded for over 150 years.
1. Capgras Delusion
In the heat of an argument it’s normal to want to disown your parents or kids, but for the sufferer of Capgras delusions that feeling never goes away. It’s commonly caused when the “wire” that connects the visual section of the brain to the emotional section is damaged. As a result, the sufferer sees their loved ones but no emotional response is triggered; they truly believe that the person in front of them is nothing more than an imposter.
Read about the other fourteen mental delusions here.