Cats that exhibit skin sensitivities, from inflammation to rashes or even discoloration, will do well with cat food specifically formulated to address certain issues. First of all, healthy fats, as well as taurine, are both important for healthy skin and coats. Omega 3’s are especially important. Be sure to ask your vet for your cat’s needs. They may recommend special diet cat food in some circumstances, while some cats may need something as specific as low ash cat food.