Introduction to dermatology by itlpw9937

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									    Introduction to
     Dermatology
      Dr. Ahmed M. Zahr Allayali
       M.D, FRCPC, FABD,FACP
Assistant Professor of Dermatology &
   Cosmetic Dermatologic Surgery
What is Dermatology?

• Dermatology is the medical specialty
 concerned with the diagnosis and
 treatment of all skin, oral and genital
 mucosa and appendageal (Hair and Nails)
 disorders
Dermatology Nomenclature: basic
lesional morphology
• a basic understanding of the histology of
 the skin is required in order to understand
 the mechanism of the observed
 dermatological physical sign.
• Histologicaly the skin
   has three main
   layers:
1. Epidermis
2. Dermis
3. Subcutaneous fat
• Dermatological Physical Signs are either:

1. Primary lesion
2. Secondary (Modified) lesions/changes
Primary Lesions
1. Macules
2. Patches
3.Papules
4. Plaques
5. Nodules
6. Vesicles
7. Bulla
8. Pustules
9. Atrophic plaques
10. Wheals
11. Cyst
Secondary (Modified) Lesions/
Changes
1. Scale
2. Crust (Scab)
3. Erosion
4. Ulcer
5. Fissure
6. Excoriation
oriation


								
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