questions

Question 1

duration of break between courses of topical corticosteroids in patients with psoriasis?

Answer 1

4 week break

Question 2

managenment of mild symptoms of acne rosacea?

Answer 2

topical metronidazole

Question 3

where is venous ulcers most commonly seen?

Answer 3

above medial malleolus

Question 4

first line for hyperhidrosis

Answer 4

topical aluminium chloride

Question 5

commonest skin disorder found in pregnancy?

Answer 5

polymorphic erruption in pregnanacy (presents as eczematous itchy red rash)

Question 6

what is pityriasis versicolor?

Answer 6

superficial cutaneous fungal infection caused by malassezia furfur

Question 7

peri-orbital & nasolabial scaly rash asociated with dandruff … classical hx of

Answer 7

sehorrhoeic dermatitis

Question 8

management of venous ulcers

Answer 8

compression bandages

Question 9

medication known to exacerbate plaque psoriasis

Answer 9

beta blockers

Question 10

what may topical corticosteroids cause in patients with darker skin?

Answer 10

patchy depigmentation

Question 11

red or black lump, oozes/bleeds on sun exposed skin

Answer 11

nodular melanoma

Question 12

autoimmune condition caused by sub-epidermal blistering of the skin
- itchy, tense blisters typically around flexures

Answer 12

bullous pemphigoid

Question 13

skin biopsy findings in bullous pemphigoid

Answer 13

immunofluroescence shows IgG & C3 at the dermoepidermal junction

Question 14

typical herald patch develops and after a few days a more generalised fir-tree rash appears

Answer 14

pityriasis rosea

Question 15

itchy, papular rash most common on the palms, soles, genitalia and flexor surfaces of arms.

rach in polyagonal shape with white lines pattern on the surface

Answer 15

lichen planus

Question 16

all the P characteristics of Lichen planus?

Answer 16

• purple
• pruritic
• papular
• polygonal rash on flexor surfaces

Question 17

description of lesion of vascular birthmarks?

Answer 17

port wine stain

Question 18

what is the intense pruritus assoc with scabies due to?

Answer 18

delayed type IV hypersensitivoty reaction to mites/eggs which occurs about 30 days after initial infection

Question 19

itchy white spots typically seen on the vulva of elderly women

Answer 19

lichen sclerosus

Question 20

what skin condition is parkinson’s disease associated with?

Answer 20

seborrhoeic dermatitis

Question 21

describe seborrhoeic dermatitis?

Answer 21

eczematous lesions on the sebum rich areas such as scalp, periorbital and auricular and nasolabial folds

Question 22

what condition exhibits Koebners phenomenon and what is this?

Answer 22

this is when lesions are seen at the site of injuries

Molluscum contagiosum

Question 23

cutaneous signs seen in Tuberous sclerosis (3)

Answer 23

• periungal fibroma
• adenoma sebaceum
• ash leaf spots

Question 24

CXR findings in sarcoidosis

Answer 24

bilateral hilar lymphadenopathy

Question 25

derm finding in sarcoidosis

Answer 25

Nodules are almost red/brown & firm, typically on the nose

Question 26

what is pyoderma gangrenosum ?

Answer 26

ulcer with violaceous/purple undermined edges... can be caused by underlying haematological malignancies * inflammatory conditions such as IBD & RA

Question 27

benign causes of Acathosis nigricans

Answer 27

- obesity - polycystic ovarian syndrome - cushing's syndrome - DM

Question 28

if a patient presents with a purpuric rash what test should you do?

Answer 28

urine diptick - to look for haematuria & proteinuria to exclude renal vasculitis

Question 29

name of flat lesions

Answer 29

macules

Question 30

name of: 'superficial loss of the epidermis which heals without scarring;

Answer 30

erosions

Question 31

4 possible causes of erythrodermic eczema

Answer 31

- withdrawal of systemic steroids - secondary infection with bacteria (Staph or strep) or viruses (HSV or VZV) - psychological stress - development of contact dermititis

Question 32

management of actinic keratoses?

Answer 32

5% 5-fluorouracil cream (efudix)

Question 33

name 4 features of high risk BCC

Answer 33

- Lesions involving the eyelid margins, ear & lip - Perineural invasion on histology - Recurrent lesion - Lesions in immunosuppressed patients

Question 34

Melanoma risk factors

Answer 34

- UV A radiation - > 100 melanocytic naevi - immunosuppression - family hx of melanoma in 1st degree relative

Question 35

what condition is periungal fibromas found it?

Answer 35

tuberous sclerosis - mutations in TSC1 & TSC2 gene

Question 36

what can Pyoderma gangrenosum ulcers be caused by?

Answer 36

underlying haematological malginancies & inflammatory conditions therefore do a FBC

Question 37

paraneoplastic presentation of acanthosis nigricans?

Answer 37

Gastric cancer (therefore investigate with upper Gi endoscopy)

Question 38

investigation of choice for erythema nodosum and why?

Answer 38

ASOT titre as a possible underlying cause is strep through infection

Question 39

causes of erythema nodosum

Answer 39

inflammatory bowel disease, TB, Sarcoidosis, viral illness, oral contraceptives and NSAIDs and strep throat infection

Question 40

medication known to exacerbate plaque psoriasis

Answer 40

beta blockers

Question 41

positive Nikolsky's sign

Answer 41

epidermis separates with mild lateral pressure

Question 42

drugs known to induce TEN

Answer 42

- phenytoin - allopurinol - carbmazepine - NSAIds - penicillins

Question 43

life threatening condition secondary to drug reaction whereby the skin develops a scalded appearance over an extensive are

Answer 43

Toxic epidermal necrolysis

Question 44

describe a verruca/plantar wart

Answer 44

small painful growth. small, firm, hyperkeratotic growth with tiny overlying black dots

Question 45

treatment for verrua?

Answer 45

topical salicylic acid

Question 46

1st line trx for actinic keratosis

Answer 46

diclofenac

Question 47

skin condition associated with coeliac disease?

Answer 47

dermatitis herpetiformis (caused by deposition fo IgA in the dermis)

Question 48

mild/moderate and severe/resistant trx to acne rosacea?

Answer 48

topical metronidazole oral tetracycline

Question 49

subtype of eczema characterised by an intensely pruritic rash on palms & soles

Answer 49

pompholyx eczema

Question 50

what is impetigo?

Answer 50

superficial bacterial skin infection caused by staph aureus or stapy pyogenes

Question 51

management of impetigo

Answer 51

hydrogen peroxide is systemically unwell topical fusidic acid