Derm

Question 1

Tinea pedis Ix

Answer 1

Skin scrape

Question 2

Herpes simplex Ix

Answer 2

Viral swab

Question 3

Impetigo Ix

Answer 3

Bacterial swab

Question 4

Hyperkeratosis and Munro abscesses?

Answer 4

psoriasis

Question 5

in Porphyria cunea tarda what is there a build up of

Answer 5

uropophinogen

Question 6

What could be the cause for a child crying when in direct sunlight

Answer 6

Erythropoietic Protoporphyria.

Question 7

1st line treatment for Acne rosacea

Answer 7

topical metronidazole

Question 8

1st line treatment for acne vulgaris

Answer 8

Benzoyl Peroxide [can add topical clindamycin]

Question 9

What is epidermolysis bullosa

Answer 9

breakdown of anchoring between epidermis and dermis

Question 10

what is erythema multiform associated with

Answer 10

mycoplasma pneumonia

HSV

Question 11

treatment for Dermatitis herpetiformis and what is it associated with

Answer 11

Oral dapasone
gluten free diet

coeliac disease

Question 12

acne rosacea tx and what is it associated with

Answer 12

mild = topical metronidazole [plus azeliac acid]

mod = PO tetracycline or erythromycin

blepharitis

Question 13

skin biopsy of pemphigus vulgaris

Answer 13

IgG crazy paving/chicken wire pattern in epidermis

Question 14

skin biopsy of bullous pemphigoid

Answer 14

linear IgG deposits across basement membrane

Question 15

which has mucosal involvement and which does not - from pemphigus and pemphigoid

Answer 15

Pemphigus = mucosal involvement

Pemphigoid = no mucosal involvement

Question 16

bacteria that causes lyme disease and 1st stage skin condition seen

Answer 16

borrelia burgdorferi

erythema migrans “bulls-eye rash”

Question 17

cellulitis treatment

Answer 17

mild = flucloxacillin 1g qds for 7 days
if pen allergic = doxy PO 100mg BD for 7 days

severe = IV flux 1g QDS
if pen allergic = IV Vancomycin (step down to PO Doxy)

Question 18

what is the most common cause of fungal nail infections

Answer 18

trichophyton rubrum

Question 19

most common cause and tx of necrotising fasciitis

Answer 19

cause = grp A strep [pyogenes]

Flux 2g IV + Clindamycin 1.2 IV + Gent 7mg/kg
and surgical debridement

If pen allergic = just Clindamycin and Gentamicin

Question 20

preferred Tx for actinic keratosis

Answer 20

5-FU

[if mild = can use topical diclofenac]

Question 21

what is the other name for seborrhoeic keratosis

Answer 21

basel cell papilloma

Question 22

what type of melanoma is described as “red/black lump, bleeds easily, see on sun exposed skin”

Answer 22

nodular melanoma

- aggressive, invade early

Question 23

woman with brown patch all her life

Answer 23

lentigo mealigna

Question 24

pityriasis versicolour features

Answer 24

hypopigmented, pink or brown (hence versicolor).

May be more noticeable following a suntan

Question 25

pityriasis versicolour Tx

Answer 25

1st line = topical ketoconazole

Question 26

where might pyoderma gangrenosum affect and what is Tx

Answer 26

stoma site

1st line = PO steroids
2nd line = Infliximab

Question 27

what drug can exacerbate plaque psoriasis

Answer 27

beta blockers

Question 28

list steroid creams from mild to potent

Answer 28

mild = hydrocortisone
moderate = clobetasone
potent = betamethasone
v potent = dermovate

Question 29

different skin types

Answer 29

I: Never tans, always burns 
II: Usually tans, always burns
III: Always tans, sometimes burns
IV: Always tans, rarely burns
V: brown skin, e.g. Indian
VI: Black skin

Question 30

what rash may appear in a fir-tree pattern

Answer 30

Pityriasis rosea

[get herald patch, followed by rest of rash = self-limiting]

Question 31

psoriasis Tx

Answer 31

1st line = topical steroid and topical Vit D analogue once daily

2nd line = up vitamin D analogue to twice daily

3rd line = up steroid to twice daily

4th line = immunosuppression

Question 32

what is eczema herpeticum

Answer 32

primary infection of eczema by herpes simplex virus 1 or 2

get monomorphic punched out lesions

Question 33

Tx for eczema herperticum

Answer 33

admit and give IV acyclovir