MCQ on Superficial and Cutaneous Mycoses (Medical Mycology)

 

Multiple Choice Questions on Superficial and Cutaneous Fungal Infections

1) All of the following are examples of superficial mycoses, EXCEPT?
a) Tinea versicolor
b) Tinea nigra
c) Black piedra
d) Tinea pedis

2) Which of the following statement regarding Tinea nigra infections is NOT correct?
a) Most prevalent in the tropical and subtropical region
b) Pigmented macules appear on palm and soles
c) It is difficult to isolate by microscopic examination from skin scrapings
d) Usually related to poor hygiene

3) The fungi Trichosporon commonly causes superficial infection of hair also called white piedra. Which of the following species of Trichosporon causes scalp hair white piedra?
a) T. ovoides
b) T. inkin
c) T. asahii
d) None of the above

4) All of the following are the characteristics of cutaneous mycoses, EXCEPT?
a) The infection of hair, skin, and nails
b) The common cause of ringworm in humans only
c) Candida spp is associated with the infection
d) The keratinized layer of the skin is prone to the infection

5) A 26-year-old man develops itchy, white flaky, and stingy patches in between the toe webs and soles of the feet, the infection is characterized by inflammation and skin fissures. 

Which of the following is the possible etiological agent?
a) Trichophyton rubrum
b) Microsporum canis
c) Trichophyton equinum
d) Trichophyton tonsurans

6) Which of the following is the risk factor for an Athlete's foot?
a) Wearing tight shoes
b) Sweating a lot
c) Keeping the feet wet for a long period of time
d) All of the above

7) A 2-year-old girl develops a rash with raised borders on her face and arms and the source of infection is found to be the pet cat who has the same type of rash on its skin. 

Which of the following fungi could be the common cause of infection?
a) Trichophyton rubrum
b) Trichophyton tonsurans
c) Microsporum canis
d) Candida albicans

8) All of the following are zoophilic dermatophytes, select from all the options given below.
a) Microsporum canis
b) Trichophyton equinum
c) Trichophyton simii
d) Microsporum nanum

9) What is the most reliable laboratory method for the isolation of Trichophyton rubrum?
a) Blood culture
b) Serological methods
c) Skin scrapings microscopic examination using KOH
d) Urease test

10) Which of the following dermatophytes does NOT have the spore form characteristic called Microconidia?
a) Microsporum spp
b) Epidermaphyton spp
c) Trichophyton spp
d) Blastomyces spp

11) Which of the following are the lesion characteristics of Pityriasis Versicolor?
a) Hypopigmented and hyperpigmented round and smooth macules on the skin
b) Hypopigmented and Hyperpigmented irregular macules on the skin
c) Yellow pigmented patches around fingernails
d) White pigmented patches around the neck and face

12) A 5-year-old kindergartener boy developed a scaling of the scalp with hair fall. After routine fungal examination, scalp ringworm was observed. 

Which of the following is the possible pathogen?
a) Trichophyton tonsurans
b) Epidermophyton flocossum
c) Trichophyton rubrum
d) Aspergillus terreus

13) What is the most correct name for the fungal infection mentioned above in the above question number 12?
a) Tinea pedis
b) Tinea nigra
c) Tinea capitis
d) Tinea barbae

14) All of the following are common dermatophytes responsible for the infection of nails, EXCEPT?
a) Epidermophyton flocossum
b) Trichophyton rubrum
c) Trichophyton mentagrophytes complex
d) Microsporum canis

15) Which of the following is the most common and effective method used for the early treatment and control of localized infection by dermatophytes that do not involve hair and nails?
a) Use of topical ointments such as azole
b) Surgery
c) Oral medications
d) All of the above

Multiple Choice Answers

1-d) Tinea pedis
2-c) It is difficult to isolate by microscopic examination from skin scrapings
3-a) T. ovoides
4-b) Common cause of ringworm in humans only
5-a) Trichophyton rubrum
6-d) All of the above
7-c) Microsporum canis
8-All option a. b, c, & d
9-c) Skin scrapings microscopic examination using KOH
10-b) Epidermaphyton spp
11-b) Hypopigmented and Hyperpigmented irregular macules on the skin
12-a) Trichophyton tonsurans
13-c) Tinea capitis
14-d) Microsporum canis
15-a) Use of topical ointments such as azole