Derm

Question 1

Treatment of acne rosacea

Answer 1

1. Brimonidine gel
2. Topical ivermectin
3. Topical ivermectin + oral doxycycline

Question 2

Fungal nail infection treatment

Answer 2

1. topical amorolfine
2. Oral terbinafine
3. Oral itraconazole

Question 3

schistosomiasis treatment

Answer 3

Praziquantel

Question 4

What condition can casue livido reticularis

Answer 4

SLE

Question 5

recent viral illness following by herald patch

Answer 5

pityriasis rosea: self-limiting

Question 6

rash seen in lyme disease + treatment

Answer 6

bulls eye (erythrema migrans)
oral doxy

Question 7

What is erythema nodusum

Answer 7

painful red lesions, due to inflammation of the subcutaneous fat, commonly occurring in the shins.

Question 8

what is pompholyx eczema

Answer 8

type of eczema which affects both the hands (cheiropompholyx) and the feet (pedopompholyx).
triggered by humidity

Question 9

what is erythema marginatum

Answer 9

• annular erythematous macules or papules that spread outwards with central clearance
• not itchy or painful and may be asymptomatic.

Question 10

skin manifestations of SLE

Answer 10

photosensitive ‘butterfly’ rash
discoid lupus
alopecia
livedo reticularis: net-like rash

Question 11

BCC features

Answer 11

• rolled edges
• central depression
• pearly, flesh-coloured papule with telangiectasia

Question 12

impetigo treatment

Answer 12

• hydrogen peroxide 1%

Question 13

what can exacerbate plaque psoriasis

Answer 13

trauma
alcohol
drugs: beta blockers, lithium, antimalarials (chloroquine and hydroxychloroquine), NSAIDs and ACE inhibitors, infliximab
withdrawal of systemic steroids

Question 14

most common site for venous ulceration

Answer 14

medial malleous

Question 15

why are antivirals give in shingles

Answer 15

reduce post-hepatic neuralgia

Question 16

Koebner phenomenon

Answer 16

lichan planus

Question 17

treatment of lichen planus

Answer 17

potent topical steroids (topical clobetasone butyrate)
benzydamine mouthwash or spray is recommended for oral lichen planus

Question 18

long term management of psoriasis

Answer 18

topical vitamin d analogue

Question 19

urticaria treatment

Answer 19

1. non-sedating antihistamine
2. sedating antihistamine
3. pred

Question 20

molluscum contagiosum features

Answer 20

pink/pearly white papules with central umbilication

Question 21

seborrhoeic dermatitis associations

Answer 21

otitis externa and blepharitis

Question 22

shingles analgesia

Answer 22

1. paracetamol and NSAIDs
2. neuropathic agents (e.g. amitriptyline)
3. oral corticosteroids

Question 23

causes of erythema nodusum

Answer 23

NO - idiopathic
D - drugs (penicillin sulphonamides)
O - oral contraceptive/pregnancy
S - sarcoidosis/TB
U - ulcerative colitis/Crohn’s disease/Behçet’s disease
M - microbiology (streptococcus, mycoplasma, EBV and more)

Question 24

scabies close contacts treatment

Answer 24

2 doses of permethin 1 week apart

Question 25

herald patch followed by erythematous, oval, scaly patches

Answer 25

pityriasis roseace

Question 26

prominent telangtascia in acne rosacea

Answer 26

laser therapy

Question 27

how does pyoderma gangrenosum present

Answer 27

initially small red papule later deep, red, necrotic ulcers with a violaceous border

Question 28

spider naevi causes

Answer 28

liver disease COCP Pregnancy

Question 29

erythema nodusum causes

Answer 29

infection - streptococci - tuberculosis systemic disease - sarcoidosis - inflammatory bowel disease - Behcet's - malignancy/lymphoma drugs - penicillins - sulphonamides - combined oral contraceptive pill pregnancy

Question 30

causative organism for pityriasis versicolour

Answer 30

Malassezia furfur also causes seborrheic dermatitis

Question 31

scabies features

Answer 31

widespread pruritus linear burrows on the side of fingers, interdigital webs and flexor aspects of the wrist

Question 32

which long term condition is associated with sebborhoeic dermatitis

Answer 32

HIV/Parkinsons

Question 33

facial hirsutism treatment

Answer 33

Topical eflornithine

Question 34

important questions in history for atopic dermatitis

Answer 34

Family history of atopy (asthma, eczema, allergic rhinitis, hay fever) Personal history of other atopic disease Sleep disturbance due to itch Effect of previous treatment on patient Aggravating and relieving factors

Question 35

signs in atopic dermaitis

Answer 35

- flexure areas affected - lichenification - keratosis pilaris

Question 36

psoriasis features

Answer 36

- well-demarcated, silver scale, salmon pink plaques - extensor surfaces, scalp, torso - Nail Changes → onycholysis, pitting

Question 37

why are topic steroids not first line in psoriasis

Answer 37

Local → skin thinning, striae, easy bruising/fragility, ↑ risk of skin infection, steroid acne Systemic → adrenal suppression, Cushing’s Syndrome Risk of developing unstable psoriasis with potent corticosteroids when treatment is stopped

Question 38

what drug may dermatologist start for psoriasis

Answer 38

Drug → Methotrexate, Ciclosporin, Acitretin, Fumaric Acid Side Effect → Pancytopenia/ Liver Cirrhosis

Question 39

4 types of melanoma

Answer 39

1. Superficial spreading (young people) 2. Nodular (worst prognosis, bleeds/oozes) 3. Lentigo maligna 4. Acral lentiginous (nails, palms, soles)

Question 40

lichen planus features

Answer 40

polygonal, pruritic (itchy), planar (flat-topped), papular lesions 'purple' 5 Ps