ORAL INFECTIONS AND OTHER MANIFESTATIONS OF HIV DISEASE

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Between 20% and 50% of HIV-infected patients develop oral lesions during their disease course.5, 81 Oral lesions may give clues to primary acute HIV infection128, 129 and suggest HIV disease progression, as many oral opportunistic conditions have been associated with immune suppression.6, 31, 32, 65, 118

The Centers for Disease Control and Prevention (CDC) include the two most common oral lesions, oral hairy leukoplakia and oral candidiasis, in their 1993 HIV disease classification system8 as clinical markers of symptomatic HIV infection (clinical category B). Other oral mucosal conditions, such as oral Kaposi's sarcoma, cytomegalovirus (CMV) ulcers, and herpes simplex virus ulcers persisting beyond 1 month, are AIDS-defining oral conditions.8 Two groups in the United States and Europe convened in the early 1990s to establish consensus on the classification of oral manifestations of HIV infection and their diagnosis, based on presumptive and definitive criteria.17, 37 Oral manifestations generally fall within five etiological categories: fungal, bacterial, viral, neoplastic, and miscellaneous lesions.

Section snippets

Candidiasis

Oral candidiasis is one of the most common oral manifestations of HIV/AIDS, affecting approximately one third of HIV-positive individuals and more than 90% of patients with AIDS at some time in their disease course.79 It may be the initial sign of HIV infection,71 and is a harbinger of immunologic decline110 and progression to AIDS.60 Oral candidiasis may develop as a result of imbalance of endogenous oral flora in other compromised conditions, such as diabetes, hematologic disorders,

Linear Gingival Erythema

Linear gingival erythema (LGE; formerly called HIV-associated gingivitis or HIV-G) appears as a distinct fiery red band along the margin of the gingiva at least 2 mm wide, without ulceration17 (Fig. 2). Prevalence is relatively low, and we have reported a rate of 4% in our HIV population.91 Although gingival erythema is usually associated with plaque accumulation and poor oral hygiene, this atypical gingivitis often exists where there is little plaque, and does not improve significantly with

Oral Hairy Leukoplakia

Oral hairy leukoplakia (OHL) is one of the two most common oral manifestations of HIV.42 It was first identified in homosexual men with AIDS in San Francisco as a white thickening of the lateral border of the tongue, with vertical “hairy” projections and corrugations (Fig. 4).39 OHL is predominantly found on the lateral border of the tongue, but may extend to the tongue's ventral and dorsal surfaces, where it is usually flat and plaque-like. It has been found rarely on other oral mucosal sites,

Kaposi's Sarcoma

Oral Kaposi's sarcoma (KS) is the most common neoplasm found in AIDS patients, and is associated with advanced immune suppression.23 Oral KS prevalence is reported to be 1.7% to 20%, and is declining in prevalence, with lesions occurring most often among men who have sex with men.23, 91, 102 A potential etiologic infective agent for KS, called human herpesvirus type 8 (HHV8) or Kaposi's sarcoma-associated herpesvirus (KSHV), was identified in 1994.10 HHV8 has been isolated from oral KS.16 This

Recurrent Aphthous Ulcers

In addition to the common minor or herpetiform varieties of recurrent aphthous ulcers (RAU), approximately 1.1% to 3.1% of HIV-infected individuals may develop the otherwise uncommon, severe major aphthous type.84, 92 Major RAU have been temporally associated with symptomatic HIV disease and severe immune suppression (both CD4 lymphopenia and neutropenia).76 These severely painful crateriform ulcers measure 10 to 30 mm in diameter, last for weeks to months if untreated, and heal with scarring

SUMMARY

Oral lesions are important in the clinical spectrum of HIV/AIDS, arousing suspicion of acute seroconversion illness (aphthous ulceration and candidiasis),128, 129 suggesting HIV infection in the undiagnosed individual (candidiasis, hairy leukoplakia, Kaposi's sarcoma, necrotizing ulcerative gingivitis),69 indicating clinical disease progression and predicting development of AIDS (candidiasis, hairy leukoplakia),60, 81 and marking immune suppression in HIV-infected individuals (candidiasis,

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    Address reprint requests to Lauren L. Patton, DDS, Department of Dental Ecology, CB #7450, 388 Dental Office Building, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7450, email:[email protected]

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