Morphology & Skin Lesions

Morphology & Skin Lesions

• What is the skin lesion
• Dermatological Examination
• Morphology:

Types Skin lesions

• Primary skin lesions

  • Macule
  • Macule Examples
  • Patch
  • Patches Examples
  • Papule
  • Plaque
  • Plaques Examples
  • Nodule
  • Vesicle
  • Bulla
  • Pustule
  • Wheal
  • Cyst
  • Telangiectasia

• Secondary skin lesions

  • Crust
  • Excoriation
  • Lichenification
  • Scar
  • Scale
  • Necrosis
  • Erosion
  • Ulcer
  • Fissure
  • Atrophy
  • Sclerosis

• Configuration Of Skin Lesions

• Skin Lesions Cases

Morphology & Skin Lesions

Dr Sami Fatehi - MSc, MD, PhD

What is the skin lesion

• It’s the skin change that occur due underlying pathogenic process and it should be identified in order to reach diagnosis.
• Skin lesion either primary or secondary
• Dermatological classified based on the primary lesions that demonate.

Dermatological Examination

is a description of Skin lesion

• Skin lesions description include:-
  1. Morphology → shape and dimensions of the lesion
  2. Configuration → arrangement of lesions or the relation of lesions to each others
  3. Distribution → in which body site they are located?

Morphology:

• Primary skin lesions: unmodified lesions
• Secondary skin lesion: modified by scratching or infection

Review: Seeing the skin (Summary Approach)

• To describe what you see on the skin, first determine the primary lesion
  1. Is it raised, flat, or depressed?
  2. Is it small or large?
  3. Is it fluid-filled?
• The table in the next slide summarizes most of the terms used to describe the skin.

Terms

Raised	Flat	Depressed	Fluid-filled	Vascular
Papule	Macule	Erosion	Vesicle	Telangiectasia
Plaque	Patch	Ulcer	Bulla	Petechiae
Nodule		Atrophy	Pustule	Ecchymosis
Tumor		Sinus	Furuncle
Wheal		Stria	Abscess
Burrow
Scar

Review: Seeing the skin (Adjectives)

• In your descriptions, include adjectives that help describe the primary lesions. Make sure to consider:

1. Size
2. Shape
3. Color
4. Borders
5. Texture
6. Configuration
7. Distribution

Take Home Points

• To describe the skin, first inspect closely
• Second, determine if the lesion is raised, flat, or depressed and its size.
• Then pick the term for the lesions that fits best!
• Finally, use adjectives relating to the shape, color, texture, distribution, and configuration to further describe the lesion.
• See the resources at the end for further reading.