can someone please explain to me what the difference between a "real" and "pseudo" hallucinsation is?

i spoke to my pdoc about some of the stuff i had been hearing/seeing, and he said not to worry because they were only pseudo-hallucinations. i have tried looking this up on the net but couldn't find anything concrete on the matter.

the closest i could come was somewhere it said that 'pseudo' hallucinations are once off (mine have lasted a few months, over a few years), or that the voices come from "inside" the head, whereas people with schizophrenia have their voices "outside" the head. this doesn't help me either, because i have had voices and noises both inside and outside of my head. and seen stuff too, and that obviously happened outside in the 'real world'.

anyone come across this before?