Dermatology morphology quiz

  • How do you characterize skin lesions?

    How to Describe Skin Lesions

    1. Bullae – Raised; fluid-filled; greater than 1 cm
    2. Burrow – Small linear or serpiginous pathways in the epidermis
    3. Carbuncle – multiple inflamed hair follicles (furuncles)
    4. Furuncles – Inflamed hair follicle
    5. Macules – Flat; smaller than 1 cm
    6. Nodule – Raised, larger and deeper than a papule

  • What is morphology in dermatology?

    Morphology is the form or structure of an individual skin lesion.
    Skin lesions may be flat, elevated above the plane of the skin or depressed below the plane of the skin.
    They may be skin coloured or red, pink, violaceous, brown, black, grey, blue, orange, yellow..

  • What is the morphology of a papule?

    Papules are small, raised cutaneous lesions, whereas papulonodules are small raised lesions with a concomitant deeper, dermal component.
    Papules are the most common morphology of the specific cutaneous manifestations of sarcoidosis (Fig. 11.1)..

  • Macule: a circumscribed, flat lesion with color change up to 1 cm in size that is not palpable (e.g. ash leaf macules, café au lait macules).
  • Papules are small, raised cutaneous lesions, whereas papulonodules are small raised lesions with a concomitant deeper, dermal component.
    Papules are the most common morphology of the specific cutaneous manifestations of sarcoidosis (Fig. 11.1).

What are the different types of skin lesions?

The lesions may be hotter or cooler than surrounding skin.
They may be mobile or immobile.
Macule — a small patch of skin that is altered in colour, but is not elevated.
Patch — a large area of colour change, with a smooth surface.
Papule — elevated, solid, palpable lesion that is ≤ 1 cm in diameter.
They may be solitary or multiple.

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What is skin morphology?

Morphology is the form or structure of an individual skin lesion.
Skin lesions may be flat, elevated above the plane of the skin or depressed below the plane of the skin.
They may be skin coloured or red, pink, violaceous, brown, black, grey, blue, orange, yellow.
Consistency may be soft, firm, hard, fluctuant or sclerosed (scarred or board-like).

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What is the difference between a rash and dermatosis?

It may be solitary or multiple.
A rash is a widespread eruption of lesions.
Dermatosis is a generic term for a disease of the skin.
When examining the skin, a dermatologist assesses distribution, morphology and arrangement of skin lesions:

  1. their number
  2. size
  3. colour
  4. which sites are involved
  5. their symmetry
  6. shape
  7. arrangement

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