Are you sure you don't mean "pseudo psychosis"?

That's when it looks like psychosis (a medical/chemical disorder: http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002520/) but is a factitious or malingering disorder instead ("faked" either intentionally or otherwise); http://www.dmacc.edu/Instructors/tkw...atoformDSM.pdf

If you really mean pseudo psychopathy, that sounds like it would any psychiatric disorder that was a somaform, factitious, or malingering one.