My cat was diagnosed with fip several months ago. Just recently he was diagnosed with hyperthyroidism. I am giving him the meds but he is still losing weight and his ears have dried out so much they feel almost crunchy. Also losing a lot of hair. I asked my vet if we should up the dose but he wants to wait. Today he started eating sand. I feel they are symptoms from the thyroid but my vets thinks it coils also be the fip. He must have the dry type because he has never had fluid in his stomach or cheat. Has anyone had anything like this with their cat?