ABD Cutaneous Infectious Diseases 3

Question 1

Grouped vesicles on an erythematous base in a dermatomal distribution that does not cross the midline suggests:

Accepted Answer

Herpes zoster

Answer

Herpes zoster represents reactivation of varicella-zoster virus, producing painful grouped vesicles confined to a single dermatome.

Question 2

A Tzanck smear showing multinucleated giant cells supports a diagnosis of:

Accepted Answer

Herpesvirus infection

Answer

Multinucleated giant cells on a Tzanck smear are seen with herpes simplex and varicella-zoster infections.

Question 3

Umbilicated, dome-shaped, flesh-colored papules in a child are most consistent with:

Accepted Answer

Molluscum contagiosum

Answer

Molluscum contagiosum, caused by a poxvirus, produces characteristic umbilicated papules containing a central keratotic core.

Question 4

Which human papillomavirus types are most strongly associated with condyloma acuminatum (genital warts)?

Accepted Answer

HPV 6 and 11

Answer

HPV types 6 and 11 cause the majority of genital warts and are considered low oncogenic risk.

Question 5

A patient presents with painful vesicular lesions on the finger following contact with oral secretions. This is termed:

Accepted Answer

Herpetic whitlow

Answer

Herpetic whitlow is an HSV infection of the finger, common in healthcare workers and children who suck their fingers.

American Board of Dermatology (ABD) Practice Test