misschristianmt what mental disorders and symptoms are called depends upon many different things like location, reason why a person wants to die of a deadly disease/disorder...

examples of what this ...could be called.....here where I live and work....

suicidal
psychosis
hyperchondria
depression,
munchousen

my point it can be any number of mental and physical health problems. my suggestion if you really want to know why you want to die of a deadly disease or mental disorder you will need to contact a treatment provider (medical doctor, psychiatrist, therapist) they will be able to work with you to discover what this is. I do not recommend trying to self diagnose because what if you really do have a serious problem and you end up self diagnosing it as something not serious or vice versa ...you could end up doing your self more harm then good. plsease contact a treatment provider to help you with this.