Ghost-Touch is a dangerous condition caused by ghosts. When a person has been ghost-touched, the effected area of skin begins to rapidly turn blue. After that, their internal organs begin shutting down, quickly leading to death, unless the person affected receives an adrenaline injection!
Ghost-Touch is caused when a living being comes into contact with concentrated Ectoplasm. It is the most dangerous ability of malicious ghosts, except for the Poltergeist, which has no Ectoplasm.