However, has your vet tested for all tick borne, rickettsial diseases, including Rocky Mountain Spotted Fever, Babesiosis, and Anaplasmosis? Babesiosis is not treated with
doxycycline. How about toxoplasmosis, also not treated with
doxycycline? The list of possible infectious agents is very extensive!
A very serious cause of thrombocytopenia is Neoplasia.