A<unk>  effect is one that originates from the brain instead of other physical organs (i.e. the cause is psychological rather than physiological) and may refer to:<unk>  pain<unk>  disease<unk>  amnesia<unk>  cough, i.e. a habit cough *Mass<unk>  illness
Psychogenic
Malignant 
Toxicant
Neuroskeptic
Carcinoid
Infodemic
Endemic 
Carcinogenesis