Derm Flashcards

1
Q

What scoring system is most important as pathological prognostic indicator?

A

Breslow depth

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2
Q

Kobener phenomenon and most likely underlying cause

A

Well-defined areas of scale formation at the sites of minor skin injuries
Most common cause: psoriasis

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3
Q

Most common pathogen in leg cellulitis

A

Streptococcus pyogenes

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4
Q

Drug trx for urticaria

A

Loratadine

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5
Q

What is Bowen’s disease and how would it be treated topically?

A

Squamous cell carcinoma in situ (v early form)
Characterized by the development of slow-growing, red, scaly patches on the skin.
Mx: 5-fluorouracil (Efudix) cream

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6
Q

Basal cell carcinoma
1) Appearance
2) Location
3) Growth

A

1) Appearance: raised, pearly bumps or pinkish patches with a rolled border and small blood vessels on the surface. They may ulcerate or form a scab in the centre
2) Location: sun-exposed areas of the skin, such as the face, neck, and upper torso
3) Growth: grow slowly and may take months or years to reach a significant size

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7
Q

Squamous cell carcinoma
1) Appearance
2) Location
3) Growth

A

1) Appearance: Can appear as firm, scaly or crusted bumps or patches with a red, inflamed base. They may ulcerate and bleed.
2) Location: Often found on sun-exposed areas of the skin, such as the face, neck, hands, and arms
3) Growth: May grow more rapidly than BCCs and can invade deeper layers of the skin if left untreated

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8
Q

Malignant melanoma
1) Appearance
2) Location
3) Growth

A

1) Appearance: Various appearances but usually present as asymmetrical, irregularly shaped moles or spots with an uneven color and border. They may be black, brown, red, or multiple colors
2) Location: Anywhere
3) Growth: Can grow quickly and may appear to change in size, shape, or color rapidly

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9
Q

Acne mx

A
  1. Topical retinoid
  2. Topical abx
  3. Lymecycline
  4. Isotretinoin
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10
Q

Which pathogen is responsible for thin-walled blisters that then ruptured, leaving yellow crusted lesions?

A

Staph aureus (IMPETIGO)

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11
Q

Eczema herpeticum mx

A

PO acyclovir

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12
Q

Scabies features

A
  • Intensely itchy rash
  • Excoriated papules across body
  • Contact w others also with rash
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13
Q

Scabies mx

A

5% permethrin

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14
Q

Rosacea features

A

rasha round nose/cheeks with pustules + red eyes w gritty feeling

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15
Q

Rosacea mx

A

Ivermectin cream

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16
Q

Scaly, thick plaques on sun exposed areas

A

actinic/solar keratosis

17
Q

flat, light brown plaques + waxy surface often scalp/back

A

sebhorreic keratosis

18
Q

hard, raised growth w/ ulcerated centre

A

keratoacanthoma

19
Q

What changes warrant a 2ww referral for derm?

A

> =3 points
Major (2 points each)
- Change in size
- Irreg colour
- Irreg shape
Minor (1 point)
- diameter >7mm
- inflamm
- oozing
- change in sensation

20
Q

Assessment method for skin ca

A

Breslow thickness
-Excision biopsy-
Stage I: <2mm
-Sentinel lymph node biopsy-
Stage II: <4mm
Stage III: any nodal involvement
- met screen-
Stage IV: any mets