4 - acne mcqs

Question 1
What is not true with regard to Propionibacterium acnes:
It is an anaerobic, gram-positive bacterium
It uses sebum as a nutrient for growth
Is not a normal inhabitant of the skin------------------
Its number correlates with the concentration of triglycerides in sebum

Question 2
The most pathognomic sign of acne is presence of:
Comedone--------
Pustule
Papule
Cyst

Question 3
Factor that is not responsible for acne flare-up:
Squeezing at blemishes
Oily food------------
Changing hormonal levels in adolescent girls
Hard scrubbing of the skin

Question 4
Which of the following is not responsible for the black colour of the open comedones (blackheads):
Oxidation of melanin
Dirt--------------
Interference in transmission of light through compacted epithelial cells
Presence of certain lipids in sebum

Question 5
According to Global Acne Grading System (GACS), acne is considered moderate if Global score is:
1-18
19-30------------
31-38
>39

Question 6
Unique therapeutic option for female acne sufferers, particularly those seeking contraception is:
Contraceptive containing estrogen-------------
Contraceptive containing only progesterone
Any of the above
None of the above

Question 7
Which of these medications can cause acneiform lesions:
Corticosteroids-------------
Tretinoin
Azelaic acid
Adapalene

Question 8
Clues that help to determine whether acne is due to an excess of androgen hormones are:
Hirsutism
Premenstrual acne flares
Irregular menstrual cycles
All the above--------------

Question 9
What is the minimum time for which one should wait before switching to a new therapy for acne:
2-3 weeks
6-8 weeks--------------
4 –5 months
10-12 months

Question 10
To avoid complications which test should be done in a married female before starting Isotretinoin treatment for acne:
Liver function test
Pregnancy test-------------
Glucose tolerance test
Renal clearance test

Question 11
Sudden and profuse lesions erupting after the age of thirty call for investigations of which of the following:
Pituitary
Adrenal cortex
Gonads
All the above-------------

Question 12
Which of these drug suppresses all the four aetiological factors responsible for acne:
Isotretinoin-------------
Tretinoin
Clindamycin
Benzoyl peroxide

Question 13
Tretinoin is used as a topical agent for treatment of acne because of it’s:
Comedolytic effect------------
Keratolytic effect
Bactericidal effect
All of the above

Question 14
Which of these is used as an oral medicine for acne:
Azelaic acid
Tretinoin
Adapalene
Isotretinoin-------------

Question 15
Bleaching of hair is a side effect associated with which of the following medications for acne:
Sulfur
Benzoyl peroxide------------
Retinoids
Isotretinoin