Question 1

Which of the following best describes the primary nutrient source for dermatophytes in superficial mycoses?

Accepted Answer

Keratin

Question 2

A patient presents with red, raised lesions between the toes and on the soles of the feet. Which fungal disease is most likely responsible?

Accepted Answer

Tinea pedis

Question 3

Which of the following is the most effective initial treatment for a limited superficial dermatophyte infection?

Accepted Answer

Topical antifungal agents

Question 4

A soil worker in the tropics develops a slowly spreading, tumor-like infection on the foot, with nodules and bone destruction. What is the most likely diagnosis?

Accepted Answer

Mycetoma

Question 5

Which of the following fungi is most commonly associated with depigmented or hyperpigmented patches of scaly skin?

Accepted Answer

Malassezia furfur

Question 6

A patient with a history of gardening presents with nodular lesions on the arm that follow the lymphatic vessels. Which organism is most likely responsible?

Accepted Answer

Sporothrix schenckii

Question 7

Which of the following statements about mycotoxicosis is correct?

Accepted Answer

It results from ingestion of fungal toxins in food

Question 8

Aflatoxins, produced by certain fungi, are best known for which of the following effects?

Accepted Answer

Inducing liver damage and cancer

Question 9

Which of the following best distinguishes chromoblastomycosis from phaeohyphomycosis in clinical diagnosis?

Accepted Answer

The presence of sclerotic bodies in tissue samples

Question 10

A patient presents with yellowing and thickening of the distal nail plate, eventually leading to nail loss. Which is the most likely diagnosis?

Accepted Answer

Tinea unguium

Question 11

Which of the following is a common source of infection for tinea corporis?

Accepted Answer

Contact with contaminated soil or animals

Question 12

Which of the following best describes the pathogenesis of mycetismus?

Accepted Answer

Consumption of toxic mushrooms leading to organ damage

Question 13

A patient with AIDS develops a fungal infection of the nasal passages and sinuses. Which disease is most likely?

Accepted Answer

Phaeohyphomycosis

Question 14

Which of the following treatments is most appropriate for a patient with a chronic or difficult case of dermatophytosis?

Accepted Answer

Griseofulvin

Question 15

Which of the following best explains why relapses of Malassezia infections are common?

Accepted Answer

Malassezia furfur is a normal member of the skin microbiome

Question 16

A patient presents with thirst, nausea, and kidney failure after eating wild mushrooms. Which genus is most likely responsible?

Accepted Answer

Cortinarius

Question 17

Which of the following is the best preventive measure for sporotrichosis among gardeners?

Accepted Answer

Wearing proper protective clothing

Question 18

Which of the following best describes the effect of the toxins produced by Amanita phalloides?

Accepted Answer

They inhibit mRNA synthesis and damage liver cells

Question 19

Which of the following is a key diagnostic feature of chromoblastomycosis in tissue samples?

Accepted Answer

Presence of sclerotic bodies

Question 20

A patient presents with red, ringlike lesions on the trunk. Which of the following is the most likely diagnosis?

Accepted Answer

Tinea corporis

Superficial, Cutaneous, and Subcutaneous Mycoses: Pathogenic Fungi and Fungal Intoxications

Study Guide - Practice Questions

Study Guide - Flashcards