Q. My cat has some blood in stool, constant iching, with hair loss and skin breakage. Lossing weight even though eating normally
DESTINI R. HOLLOWAY, DVM
A. Sounds like your kitty possibly has parasites. Fleas cause a lot of itching in cats that are allergic to them and then can transmit Tapeworms which can cause weight loss. I would get her checked by a veterinarian and if Tapeworms are present they will prescibe a product containing Praziquantel to rid the worm.
Also for flea prevention I recommend either Revolution topical for cats.