Abstract
Rickettsioses are worldwide-distributed diseases caused by obligate intracellular small gram-negative bacteria, usually transmitted to humans by the bite of arthropods, such as ticks. They are clinically characterized by the triad of high fever, headache and general malaise, and skin rash. Diagnosis of rickettsial infection relies on a high index of suspicion, and is based on clinical features and epidemiologic data and is confirmed by positive serologic testing and/or PCR. Ocular involvement is common and is frequently asymptomatic, including retinitis, retinal vascular changes, and optic disc involvement. Doxycycline is the drug of choice for the treatment of rickettsial diseases, but other antibiotics may be used. Additional topical antibiotics and corticosteroids may be required to treat ocular disease. Although prognosis of systemic infection is good in most cases, rickettsioses may be severe and potentially lethal.
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Khairallah, M., Kahloun, R., Messaoud, R. (2016). Rickettsial Diseases. In: Zierhut, M., Pavesio, C., Ohno, S., Orefice, F., Rao, N. (eds) Intraocular Inflammation. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75387-2_104
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DOI: https://doi.org/10.1007/978-3-540-75387-2_104
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