Dermatophytosis

Question 1

Dermatophytes are free living ……

Answer 1

Fungi, hyaline, filamentous mold, septate and produce spores

Question 2

T. Rubrum uses .. …… to adhere to epithelial

Answer 2

Carbohydrate-specific adhesions

Question 3

T. Mentagrophytes adhere through….

Answer 3

Fibrillar projections

Question 4

The keratin in the skin is degraded into …….

Answer 4

Oligopeptides or amino acids

Question 5

What is tinea capitis?

Answer 5

It is a dermatophyte infection of the scalp or hair that begins as a pupuke and spreads to form irregular or well-demarcated areas of alopecia

Question 6

Tinea capitis is commonly formed by the antropophilic dermatophytes…….

Answer 6

T. Tansurans

Question 7

Endothrix is common caused by ………. and ……….

Answer 7

T. Tansurans
T. Violaceum

Question 8

Favus is commonly caused by …….

Answer 8

T.shcoeleinii

Question 9

Tinea capitis mostly affects what age group

Answer 9

Children

6 months to 10/12 years

Question 10

If ringworm occurs in adult it’s mostly caused by which group of dermatophytes …..

Answer 10

Antripophilic dermatophytes

Question 11

Athlete’s foot is commonly caused by…….

Answer 11

T. Rubrum followed by T. Interdigitale

Question 14

How are dermatophytes transmitted?

Answer 14

They are transmitted through arthrospores in the parasitic state

Through asexual or sexual conidia in the free living state

Question 15

Where does the dermatophytic infection start?

Answer 15

Growing hair or stratum corneum of the skin

Question 16

Why don’t dermatophytes invade resting hair?

Answer 16

Because the nutrients needed for growth would have been used up or limited

Question 17

List the mode of transmission of dermatophytes

Answer 17

Direct contact with symptomatic or asymptomatic individuals

Contact with infected animals
Through soil
Or through airborne infected skin scales or hair which can remain viable for several months