Some thoughts on Pyka

The sneezing could be sinus infection - pinkish usually indicates smallish amount of blood.

What food is Pyka eating? Has your mom tried changing his diet to a lamb based? (fewer allergy reactions) Gradual change to lamb, see if the itching decreases. If it is a food allergy that is causing the itching/scratching/run to try to get away from 'something' - eliminate the trigger food. Possib. a flea allergy - does your mom have him on a topical flea control. I find these work very well.
Good luck