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Impetigo (P)
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Course Curriculum
1. What is the most common causative organism of impetigo?
*
Staphylococcus aureus
Streptococcus pneumoniae
Escherichia coli
Candida albicans
2. What is the characteristic appearance of impetigo lesions?
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Dry scaly plaques
Honey-coloured crusts on erythematous base
Blistering purpura
Target lesions
3. Which type of impetigo typically presents with bullae?
*
Follicular impetigo
Bullous impetigo
Ecthyma
Cellulitic impetigo
4. What is the first-line topical treatment for localised non-bullous impetigo?
*
Oral flucloxacillin
Fusidic acid 1% cream
Hydrogen peroxide 1% cream
Clotrimazole
5. When should oral antibiotics be used in impetigo?
*
Never
If widespread, bullous, or systemic symptoms present
If rash is itchy
For all cases
6. Which oral antibiotic is first-line for widespread or severe impetigo?
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Amoxicillin
Flucloxacillin
Clarithromycin
Metronidazole
7. What advice should be given to parents of children with impetigo regarding school attendance?
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Continue attending school
Exclude until lesions are crusted over or 48 hours after antibiotics started •
Only exclude if fever is present
Exclude for 1 week
8. Which hygiene measure helps prevent the spread of impetigo?
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Regular handwashing and avoiding towel sharing
Frequent bathing with scented soap
Using antihistamines
Avoiding sunlight
9. Which condition may be confused with impetigo in early stages?
*
Eczema herpeticum
Chickenpox
Herpes simplex (cold sores)
Psoriasis
10. Which of the following is a risk factor for developing impetigo?
*
Use of corticosteroids
Asthma
Pre-existing skin trauma or eczema
Diabetes insipidus
11. What type of impetigo is more common in infants?
*
Bullous impetigo
Ecthyma
Non-bullous impetigo
Cellulitis
12. Which body areas are most commonly affected in impetigo?
*
Face and hands
Trunk
Soles of feet
Scalp
13. What is ecthyma in the context of impetigo?
*
An oral manifestation
A fungal infection
A deeper ulcerative form of impetigo
A type of viral rash
14. Which organism causes bullous impetigo through toxin production?
*
Group B Streptococcus
Candida glabrata
Mycoplasma pneumoniae
Staphylococcus aureus producing exfoliative toxin A
15. What is the typical incubation period for impetigo?
*
12 hours
1–3 days
7–10 days
2 weeks
16. Which of the following is NOT typically used in the treatment of impetigo?
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Flucloxacillin
Fusidic acid
Aciclovir
Hydrogen peroxide
17. In what case should swabs be taken from impetigo lesions?
*
All cases
Only with bullous forms
Only in children
Recurrent, resistant or outbreaks
18. What follow-up is usually required for uncomplicated impetigo?
*
Weekly blood tests
None, unless symptoms persist or worsen
Immediate dermatology referral
Repeat antibiotics every 5 days
19. Which patient should be referred for specialist advice?
*
Immunocompromised patient with recurrent impetigo
One with a small patch of crusting
Child with first episode
Teenager with mild symptoms
20. Which of the following is an appropriate public health step for repeated impetigo outbreaks in school settings?
*
Liaise with health protection team
Disinfect toys weekly
Require all children to use antibiotics
Quarantine all classes