Chapter 04: Infectious Diseases Ibsen: Oral Pathology for the Dental Hygienist, 7th Edition MULTIPLE CHOICE 1. Which condition does not occur in impetigo? a. Itching b. Pruritus c. Regional lymphadenopathy d. Fever ANS: D
Fever and malaise do not occur in impetigo. Itching can occur in impetigo. Pruritus (itching) can occur in impetigo. Regional lymphadenopathy can occur in impetigo. REF: Impetigo, page 117
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2. Which agent is used to treat impetigo? a. Antiviral medications b. Topical or systemic antibiotics c. Corticosteroids d. Nonsteroidal antiinflammatory agents ANS: B
Impetigo is caused by a bacterial infection; therefore, topical or systemic antibiotics are used to treat it. Antiviral medications are not used to treat impetigo. Corticosteroids are not used to treat impetigo. Nonsteroidal antiinflammatory agents are not used to treat impetigo. REF: Impetigo, page 117
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3. Tonsillitis and pharyngitis are caused by group A -hemolytic streptococci. These conditions
are significant because of their relationship to scarlet fever and rheumatic fever. Which condition may be related to heart valve damage? a. Rheumatic fever b. Strawberry tongue c. Scarlet fever d. Geographic tongue ANS: A
Rheumatic fever can result in heart valve damage and the development of bacterial endocarditis. Strawberry tongue is associated with scarlet fever, but not specifically with heart valve damage. Heart valve damage is not a specific component of scarlet fever. Geographic tongue is not associated with heart valve damage. REF: Tonsillitis and Pharyngitis, page 117
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4. Which antigen is injected into the skin to determine exposure and infection with
Mycobacterium tuberculosis? a. HLA-B27 b. PPD
