Dermatology Flashcards

1
Q

Treatment for large strawberry naevus (camillary hemangiamo)

A

Propanolol

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2
Q

Treatment for hyperhydrosis (excessive sweating)

A

Topical alluminium chloride
Iontophoresis (passing of a weak electric current through the skin)
Botox - licensed for axillary symptoms
Surgery - eg endoscopic transthroacic sympathectomy

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3
Q

What is a normal ABPI?

A

Between 0.9 - 1.2

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4
Q

ABPI in arterial disease

A

Below 0.9. Values above 1.3 can also indicate arterial disease secondary to calcification (eg in diabetes)

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5
Q

Management of venous ulcers

A

Compression dresssing

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6
Q

Management of seborrhoeic dermatitis

A

Topical ketoconazole

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7
Q

What organism is associated with seborrhoec dermatitis

A

Malassezia

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8
Q

Treatment for impetigo

A

Hydrogen peroxide 1% cream (first line)
Topical fusidic acid
Toppical mupirocin

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9
Q

School exclusion for impetigo

A

Excluded until the lesions are crusted and healed or 48 hours after antibiotic treatment.

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10
Q

Management of dermatitis herpetiformis

A

Gluten free diet
Dapsone

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11
Q

Treatment fo pityriasus versicolor

A

Ketoconazole shampoo

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12
Q

Organism causing pityriasis versicolol

A

Malessezia furfur

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13
Q

4 main diagnostic criteria for Herediatroy haemorhagic telangiesctasia

A
  1. Epistaxis
  2. Telangiectasia
  3. Visceral lesions
  4. Family history

2 criteria - possible HHT. 3 or more - definite

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14
Q

causes of scarring alopecia

A

Trauma, burns, radiotherapy, lichen planus discoid lupus, tinea capitus

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15
Q

Causes of non scarring alopecia

A

male pattern baldness, Drugs (carbimazole, heparin, OCP, Colchicine) Iron and zinc deficiency, alopecia areate, telogen effluvium, trichotillomania

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16
Q

Most common location for keloid scars

A

Sternum

17
Q

Treatment of keloid scars

A

Intra lesional steroids eg tramcinolone
Excision (but can cause worse scarring)

18
Q

Treatment of rosacea

A

Topical brimodine gel (patients with predominant flushing and minimal telangiectasia) - used on an as requried basis and reduces redness within 30 minutes
Topical ivermectin
Topical metronidazole or topical azelaci acid.
Severe - Topical ivermectin + oral doxycycline
Laser therapy

19
Q

Skin disorder that causes itch and a rash often polygonal in shape with a white lines pattern on the surface. Also causes a white lace pattern on buccal muscosa

A

Lichen planus

20
Q

Management of lichen planus

A

Potent topical steroids
Benzydamine mouthwash for oral lichen planus

21
Q

Causes of erythema nodosum

A

Infection (streptococci, TB, brucellosis)
Sarcoidosis
IBD
bechets
Malignancy/lymphoma
Drugs - penicillin, sulphonamides, COCP, pregnancy

22
Q

Treatment for actinic keratosis

A

Flurouracil cream
Topical diclofenac
Topical imiquimod
Cryotherapy
Curettage and cauthery

23
Q

Investigation for suspected allergic contact dermatitis

A

Patch testing

24
Q

Treatment for post wine stains

A

laser therapy

25
Q

Treatment for alopecia areata

A

Topical or intralesional corticosteroids
Topical minoxidil
Phototherapy
Dithranol and in 80 - 90% eventually

hair will regrow in 50% of patients in 1 year

26
Q

Treatment for chronic plaque psoriasis

A
  1. Potent corticoteroid + vitamin D analogue
    (should be applied seprately)
    If no improvement after 8 weeks
  2. Vitamin D analagoue 2 x daily
    If no improvement after 8 - 12 weeks
  3. Potent corticosteroid applied 2 x daily for up to 4 weeks or a coal tar preparation
    Short acting dithranol
    Phototherapy
    Systemic therapy - methotrexate, ciclosporin, biologics, retinoids
27
Q

Management of scalp psoriasis

A

Potent topical corticosteroud

28
Q

Management of face, flexural or genital psoriasis

A

Mild or moderate potency corticosteroud applied once or twice daily

29
Q

managment of bullous pemphigoid

A

Oral corticosteroids

30
Q

What does the skin biopsy for bullous pemphigoid show

A

IgG and C3 at the dermoepidermal junction

31
Q

Treatment of scabies

A

Permethrin 5%
Malathion 0.5%

32
Q

Factors that exacerbate psoriasis

A

Trauma
Alcohol
Drugs (beta blockers, lithium, antimalarial, NSAIDS, ACE inhibitos. infliximab

33
Q

What is koilonychia

A

Spoon shaped nails caused by iron deficiency

34
Q

What is pemphigoid gestationis?

A

Autoimmune blistering disorder specific to pregnancy. Occurs in the 2nd or 3rd trimester and characterised by intensly itchy urticarial plaques that progress to tense vesicles. Initial lesions in the periumbilical region are characteristic.
Causes by antibodies affecting the basement membrane zone.

35
Q

What is pompholyx eczema?

A

Vesicular hand dermatitis common in young adults and is related to sweating

36
Q

What is a curlings ulcer?

A

An acute peptic stress ulcer that can occue after severe burns,