typhus, African tick

typhus, African tick One of the tick-borne rickettsial diseases of the eastern hemisphere, similar to Rocky Mountain spotted fever but less severe. Symptoms include fever, a small ulcer (tache noire) at the site of the tick bite, swollen glands near the site of the tick bite (satellite lymphadenopathy), and a red, raised (maculopapular) rash. Also known as fièvre boutonneuse. See also rickettsial diseases.