Evaluating and treating anxiety disorders in medical settings.

Anxiety disorders and medical illness present to the primary care physician as a common comorbidity. This article aims to review the literature on the prevalence of anxiety disorders in patients presenting to primary care physicians; to address the key issues in assessing the comorbid condition; and to discuss psychological and pharmacological treatment options for patients with a comorbid anxiety disorder and medical illness. Anxiety disorders are highly prevalent within the primary care population, and these disorders significantly impact the patient's course and outcome. Fortunately, primary care physicians have a variety of effective cognitive, behavioral and pharmacological interventions available for managing these patients with comorbid anxiety and medical illnesses.

Description of the oocysts of three new species of Eimeria (Apicomplexa: Eimeriidae) from iguanid lizards (Sauria: Iguanidae) of Central and South America

Three new species of Eimeria are described from iguanid lizards of Central and South America. The oocysts of each species have no micropyles or residua and the sporocysts lack Stieda bodies, but all have a sporocyst residuum. Eimeria sanctaluciae n. sp. was found in the St. Lucia tree lizard, Anolis luciae, collected from the Maria Islands, Lesser Antilles. The oocysts are spherical to subspherical, averaging 17.3 x 16.5 µm, with a single layered colourless wall; about 60 per cent contain polar granules. The sporocysts are ellipsoidal and average 7.7 x 5.5 µm. Eimeria liolaemi s. np. was recovered from the blue-gold swift, Liolaemus taenius from Chile. The oocysts are spherical to subspherical, measuring 21 x 20.1 µm with a single-layered colourless wall. The sporocysts are subspherical and average 7.4 x 6.8 µm. Eimeria caesicia n. sp. is described from the Brazilian collared iguanid, Tropidurus torquatus. The oocysts measure 27.4 x 23.7 µm, are spherical to subspherical, with a bilayered wall, the outer surface of which appears pale blue in colour, the thin, inner wall appearing brown, when viewed by direct light under the optical microscope. The sporocysts are subspherical and average 9.4 x 7.2 µm. Unamed polysporocystid oocysts with dizoic sporocysts are reported from the faeces of the lesser St. Vincent tree lizard, Anolis trinitatis and the possibility of spurious parasitism briefly discussed. In addition, oocysts of an unnamed Isospora sp. with a smooth oocyst wall which closely resembles I. reui were recovered from A. trinitatis.