Infection

Question 1

What is the first line treatment for impetigo?

Answer 1

Topical fusidic acid

Oral flucloxacillin if severe (clarithromycin if allergic)

Question 2

How long should children with impetigo be excluded from school for?

Answer 2

Until the lesions have crusted over and healed

48 hours after antibiotics

Question 3

What is the shingles vaccine and who gets it?

Answer 3

A live attenuated sub cutaneous vaccine offered to all patients aged 70 = 79

Question 4

What is the treatment for fungal nail infections?

Answer 4

Oral terbinafine or itraconazole (6 weeks - 3 months for fngernails and 3 - 6 months for toes)

Question 5

What is erythrasma?

Answer 5

An asymptomatic flat slightly scaly pink or brown rash that is usually found in the groin or axillae. It is caused by an overgrowth of corynebacterium minitissmum

If you examine with a woods light you will see a coral red fluoresence

Question 6

How do you treat erythrasma?

Answer 6

Topical miconazole or topical antibacterial

Oral erythromycin

Question 7

What causes athletes foot?

Answer 7

trichophyton fungi

Question 8

How do you treat athletes foot?

Answer 8

Topical imidazole or terbinafine

Question 9

What is erythema multifrome?

Answer 9

A hypersensitivity rash that has a target appearance. It is most commonly triggered by infections with the most common being herpes simplex

Question 10

What is the most common cause of tinea capitis?

Answer 10

Trichophytan tonsurans 
Microsporum canis (from cats or dogs)

Question 11

What is the management of tinea capitis?

Answer 11

Oral antifungals (terbinifine)
Topical ketoconazole

Question 12

What is the most common cause of tinea corporis?

Answer 12

Trichophytan rubrum

Question 13

How do you treat tinea corporis ?

Answer 13

oral fluconazole

Question 14

What is the treatment for scabies?

Answer 14

Permethrin 5%

Malathion

Question 15

What kind of hypersensitivity reaction causes the itch in scabies?

Answer 15

Type IV reaction to the mites/eggs which occurs 30 days after the initial infection

Question 16

How long does the itch persist for in scabies?

Answer 16

4 - 6 weeks post eradication

Question 17

Who gets crusted/norweigan scabies?

Answer 17

Patients wirh suppressed immunity such as HIV

Question 18

How you you treat norweigan scabies?

Answer 18

Ivermectin

Question 19

What causes pityriasis versicolour?

Answer 19

Mlassezia furfur

Question 20

What is the treatment for pityriasis versicolour?

Answer 20

Topical antifungal such as ketoconazole shampoo

If extensive then oral itraconazole

Question 21

What is eczema herpeticum?

Answer 21

Primary infection of the skin by herpes simplex 1 or 2. It is seen in children with atopic ecxema. Need to be admitted for IV acyclovir

Question 22

What is necrotising fasciitis?

Answer 22

A rapidly spreading infection of the deep fascia with secondary tissue necrosis?

Question 23

What is cellulitis?

Answer 23

Skin infection involving the deep subcutaneous tissue

Question 24

What is erysipelas?

Answer 24

An acute superficical form of cellulitis that involves the dermis and upper subcutaneous tissue

Question 25

What bacteria cause cellulitis?

Answer 25

Strep pyogenes

Staph aureus

Question 26

How is erysipelas distinguished from cellulitis?

Answer 26

Erysipelas has a well defined red raised border

Question 27

What is staphylococcal scalded skin syndrome?

Answer 27

A scald like skin appearance followed by large flaccid bullae. Caused by a circulating epidermolytic toxin

Question 28

How do you treat staphylococcal scalded skin syndrome?

Answer 28

Antibiotics (fusidic acid, erythromycin)

Analgesia