We report the first case of livedo reticularis revealing a latent infective
endocarditis due to Coxiella burnetti. The patient, a 54-year-old woman, a
lso had chronic thrombocytopenia and mixed cryoglobulinemia. Chronic Q feve
r was confirmed by serodiagnosis and livedo regressed totally with doxycycl
ine and hydroxychloroquine.