I know next to nothing about liver spots, though I do remember reading somewhere on the net that it is associated with some kind of nutritional deficiency.
Regardless, sad to say you probably have parasites anyway, so at least the liver spots may be helping you to think in a good direction.
See link below for cayenne pepper challenge test to see if you have tapeworms, for example. Hulda Clark says everyone she ever lab tested had Tapeworms & everyone had other kinds of parasites as well.
What helped me in case any of it can help you: //www.curezone.org/forums/fm.asp?i=1522290#i