#20 Cotard Delusion
The zombie trend has been going on for a while with movies and series like Twilight and The Walking dead. Cotard Delusion is no zombie trend.
Rather, it is a scary disorder where the sufferers believe they are a zombie or a ghost!
The disorder is named after the neurologist Jules Cotard who first discovered this neuropsychiatric condition in 1880.
The reason why this disorder is so dangerous is that sufferers may starve themselves to death.
This is because they believe that they are already dead, do not exist, or feel a loss of blood or internal organs.
The delusion that you do not exist or are dead unsurprisingly results in depression in severe cases of Cotard Delusion.