Feline urticaria pigmentosa is a form of a condition known as cutaneous mastocytosis and it is caused by the accumulation of the defective mast cells.
Cystinuria in cats is an inherited metabolic disease characterized by defective amino acid reabsorption, leading to the formation of cystine stones.
Autoimmune lymphoproliferative syndrome in cats is a lymphoproliferative disorder distinguished by massive enlargement of lymphatic nodes and spleen.