Infectious Diseases of the Skin — MCQs

A 35-year-old professional businesswoman notices the appearance of several hyperkeratotic, well-demarcated growths on the palmar surface of her index finger and on her toe. They do not change in size and cause her only minimal discomfort. A biopsy of one of the lesions, viewed at 40x magnification, is shown. Which of the following viruses is the most likely etiologic agent?

An 18-year-old man has facial and upper back lesions that have waxed and waned for the past 6 years. On physical examination, there are 0.3- to 0.9-cm comedones, erythematous papules, nodules, and pustules most numerous on the lower face and posterior upper trunk. Other family members have been affected by this condition at a similar age. The lesions worsen during a 5-day cruise to the Adriatic. Which of the following organisms is most likely to play a key role in the pathogenesis of these lesions?

False about Tinea versicolor

Patient presents with intense nocturnal pruritus of the interdigital spaces of the left hand as shown in the image, with similar symptoms reported in household contacts and papular lesions also noted on the wrists and waistline. Identify the condition.

A child presents with grouped vesicles on the lips. What is the bedside investigation that you would like to do?

Which of the following conditions does NOT exhibit dyskeratosis?

Rhinophyma is associated with-

A patient from Himachal Pradesh gets a thorn prick and subsequently presents with a verrucous lesion on feet which on microscopy revealed "Copper penny bodies". The diagnosis is

A 62-year-old male smoker and chronic alcohol user presents with a 3-month history of a rapidly growing, painful gingival lesion with bleeding. Examination reveals an indurated, irregular, ulceroproliferative mass on the alveolar margin with fixation to underlying bone. Biopsy confirms squamous cell carcinoma. What is the most likely diagnosis?

The following image of lung washing in AIDS positive patient is stained with: