Dermatology Flashcards

1
Q

What is Nikolsky’s sign?

A

The appearance of blisters and erosions when the skin is rubbed gently

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2
Q

What are the common drug causes of SJS?

A

penicillin
sulphonamides
lamotrigine, carbamazepine, phenytoin
allopurinol
NSAIDs
oral contraceptive pill

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3
Q

What is the first-line management of TEM?

A

Supportive care - ICU
IV Immunoglobulin

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4
Q

What is the first-line management for pyoderma gangrenosum?

A

Oral prednisolone

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5
Q

What is a Salmon Patch?

A

A vascular birthmark - a flat vascular lesion typically affecting the nape of the neck.

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6
Q

Which drugs can exacerbate plaque psoriasis?

A

Beta-blockers, lithium, antimalarials, NSAIDs and ACE inhibitors

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7
Q

What is the most common effect of isoretinoin?

A

Dry skin

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8
Q

What is the first-line management for Pityriasis versicolor?

A

Topical ketoconazole

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9
Q

What is the characteristic presentation of Pityriasis versicolor?

A

Hypo or hyperpigmented scaly macules and patches on the trunk and proximal extremities.

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10
Q

What is the first-line management for non-bullous impetigo?

A

Hydrogen peroxide cream 1%

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11
Q

What topical ABx cream is indicated in bullous impetigo?

A

Topical fusidic acid/topical mupirocin

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12
Q

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

A

Until all lesions are crusted and healed OR 48 hours after commencing ABx management.

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13
Q

What is onycholysis?

A

Separation of the nail from the nail bed.

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14
Q

What is the first-line management of Scabies?

A

Permethrin 5% (All household and close physical contacts should be treated at the same tmie)

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15
Q

What is the first common symptom for rosacea?

A

Flushing

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16
Q

What is the management of moderate-to-severe rosacea (with papules or pustules)?

A

Combination of topical ivermectin and oral doxycycline

17
Q

What is the first-line management of rosacea with predominant erythema/flushing?

A

Topical brimonidine gel

18
Q

What is the NICE recommended first-line management for plaque psorasis?

A

8 weeks (Maximum) or vitamin D analogue and a potent corticosteroid

(Apply separately, one in the morning and the other in the evening).

19
Q

What virus is responsible for molluscum contagiosum?

A

Poxviridae

20
Q

What is the characteristic skin presentation of molluscum contagiosum?

A

Characteristic pinkish or pearly white papules with a central umbilication - up to 5mm in diameter.

21
Q

What is the first-line management for facial hirsutism?

A

Elfornithine (Topical)

22
Q

What is milia?

A

Small, benign, keratin-filled cysts that typically appear around the face
Most common in newborns.

23
Q

What is the first line management for Shingles?

A

Antivirals within 72 hours of presentation
Paracetamol and NSAIDs

24
Q

What type of rash is associated with guttae psoarsis?

A

Tear drop papules

25
Q

What is bullous phemigoid?

A

Autoimmune condition causing subepidermal blistering of the skin

  • No mucosal involvement
    itchy tense blisters typically around the flexures
26
Q

What is a Strawberry naevus?

A

A capillary haemangioma rapidly develops in the first month of life.

Appear as erythematous raised and multilobed tumours.

Common sites include the face, scalp and back

27
Q

What are the most common causes of erythema nodosum?

A

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)

28
Q

What specific patch is associated with pityriasis rosea?

A

Herald patch

29
Q

What causes tinea veriscolor?

A

Malassezia furfur