The symptoms of uveitis derive from the site of involvement in the uveal tract. Patients with anterior uveitis complain mainly of painful, red, tearing eyes and photophobia. Posterior uveitis often produces symptoms of blurry vision, which can be diffuse or localized depending on its extent and the presence of an associated vitritis. In the absence of vitritis, localized posterior disease may lead to sharp demarcations in vision.
Uveitis occurs in a wide variety of systemic diseases including those described herein and in other chapters of this book. Several associated diseases are of primary clinical interest, although individually they are relatively uncommon or even rare in the usual practice of a head and neck specialist. Sarcoidosis is a common cause of anterior, intermediate, and posterior uveitis, which is covered in more detail later in this chapter. Other diseases causing uveitis are described in other chapters of this book and include Behcet's disease, relapsing polychondritis, syphilis, Lyme disease, cat-scratch disease, tuberculosis, fungal infection, and infection with the human immunodeficiency virus, cytomegalovirus, and herpes viruses.
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