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Dermatology Almost a Doctor > Defining SKIN lesions > Flashcards

Defining SKIN lesions Flashcards

1
Q

What is a macule?

A
  • flat
  • often red
  • <1cm
  • well defined border
  • arises from the epidermis
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2
Q

What is a papule?

A
  • raised and palpable lesion
  • <5mm diameter
  • well defined border
  • typically not compressible
  • arises from the dermis
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3
Q

What is a patch?

A
  • a larger macule

ie:

  • flat
  • often red
  • > 1cm
  • well defined border
  • arises from the epidermis
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4
Q

What is maculopapular?

A
  • red area covered with small confluent bumps
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5
Q

What is a nodule?

A
  • a papule that is >5mm

ie:

  • raised and palpable lesion
  • > 5mm diameter
  • well defined border
  • typically not compressible
  • arises from the dermis
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6
Q

What is a plaque?

A
  • a palpable lesion with a flat top
  • > 1cm diameter
  • well defined border
  • not compressible
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7
Q

What is a wheal?

A
  • raised
  • blanches
  • compressible
  • caused by oedema of the dermis
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8
Q

What is a vesicle?

A
  • a fluid filled lesion <5mm diameter
  • raised
  • arises from the epidermis
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9
Q

What is a bulla?

A
  • a vesicle >5mm diameter

- likely from the dermis

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10
Q

What is a pustule?

A
  • visible collection of pus in the skin <1cm diameter
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11
Q

What is an abscess

A
  • a pustule >1cm diameter

ie:
- visible collection of pus in the skin >1cm

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12
Q

What is purpura?

A
  • bleeding into the dermis
  • multiple dark coloured spots, can be red or purple in colour
  • can be macular or papular
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13
Q

What is petechiae?

A
  • purpura <2mm diameter

ie:

  • bleeding into dermis
  • multiple dark coloured spots, can be red or purple in colour
  • can be macular or papular
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14
Q

What is a haematoma?

A
  • swelling from a large bleed in the skin

- often tender and palpable

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15
Q

What is milia?

A
  • tiny white spots

- contain keratin, occurs as a result of the blocked pilosebacious glands

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16
Q

What is a papilloma?

A
  • warty-like appearance
  • tiny finger like projections from the skin surface
  • typically from wart viruses )(HPV)
17
Q

What is an ulcer?

A
  • a deep skin defect

- goes all the way through the epidermis and may or may not effect the dermis

18
Q

What is an erosion?

A
  • a shallow skin defect

- affect the epidermis only

19
Q

What is a fissure?

A
  • a split in the skin

- affects dermis and epidermis

20
Q

What is excoriation?

A
  • scratch marks
21
Q

What is keloid?

A
  • scar tissue that goes beyond the boundaries of the original injury
22
Q

What 7 types can derm diagnoses be split into?

A 
INFECTION
bacterial:
- impetigo
- cellulitis
viral:
- herpes simplex
- chicken pox
- warts
- pityriasis rosea
- viral rash "viral exanthem"
ACNE
PSORIASIS
ECZEMA
URTICARIA
SUN-RELATED SKIN CANCERS
DRUG-RELATED ERUPTIONS

Dermatology Almost a Doctor (33 decks)

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