Dermal pathology 1. Terminologya. Primary lesionsi. Definition of what a primary lesion isii. Maculeiii. Papuleiv. Nodulesv. Plaquevi. Whealvii. Vesicles and bullaeviii. Pusulesix. Abscessx. Cystxi. Atrophy xii. Sclerosis xiii. Erosion xiv. Ulcer b. Secondary skin lesions 2. What features would indicate to you that a lesion is benign or malignant

TOPIC Describing skin lesions

1. Skina. Function b. Layers2. Types of skin lesionsa. Primary i. An area of tissue with impaired function due to damage by trauma or disease1. Macule2. Patch3. Papule4. Nodule5. Plaque 6. Vesicle7. Bulla8. Pustule9. Abscessb. Secondaryi. A lesion arising as a consequence of any primary lesion 1. Scale2. Crust3. Ulcer4. Fissure5. Atrophy 6. Lichenification

3. Considerations (What features would indicate to you that a lesion is benign or malignant?)a. Features to notei. Size ii. Typeiii. Shape and symmetryiv. Colour and pigmentation v. Surface features (smooth; rough)vi. Distribution over the body (extensor; flexor surfaces)

Power point presentation: Understanding and describing lesions

Slide 1 - PurposeIt is important to understand and be able to systematically describe the different features and observable patterns of skin lesions. This aids in the communication of observable features between health professionals (for example when making a referral), documentation and record keeping purposes, and is the first step in making a full assessment, differential diagnosis, and identification of a presenting cutaneous condition.

Slide 2 : What is skin? Normal skin Form Function

What is a lesion? A lesion is any single area of altered skin. It may be solitary or multiple.

Slide 3: Describing a typical lesion How to describe a lesion - Following the clinical examination, a typical lesion can be described in terms of its: Type Surface features Colour (including erythematous or non-erythematous) Border (well/poorly defined, or accentuated) Size, shape, and symmetry (includes round, irregular, serpiginous) Location

Slide 4: Types of skin lesions Skin lesions can be subdivided into primary lesions and secondary lesions. Primary lesions Primary lesions are directly caused by the disease process

Types of primary lesions Macule Freckles, moles, rubella, measles Papule Naevi, warts, lichen planus, some forms of acne Nodules Cysts, lipomas, and fibromas Plaque Pso Vesicles Bullae Pustule Urticaria (wheals) Abscess Cyst Atrophy Ulcer

Secondary lesions Secondary lesions are a result of the disease process

Types of secondary lesions Scar Crusts Lichenification

Use the descriptors from the following websitehttp://www2.kumc.edu/internalmedicine/students/ambulatory/dermkestenhandout61003.pdf

Slide 4: Surface features of lesions Normal/smooth (i.e. same as the surrounding skin) Scaly Excess dead epidermal scales produced by shedding from stratum corneum or abnormal keratinisation Hyperkeratotic Increased keratinisation (cornifica Warty Crust Exudate Excoriated

https://books.google.com.au/books?id=-zpsb9e63AcC&pg=PA32&lpg=PA32&dq=description+of+surface+features+of+skin+lesions&source=bl&ots=Ddmx_zW2uI&sig=6uJq7QX5wV9nKntAuU6UFpNTigc&hl=en&sa=X&ved=0CDwQ6AEwBWoVChMI0J3wi4XHyAIVRd-mCh2LBgta#v=onepage&q=description%20of%20surface%20features%20of%20skin%20lesions&f=trueUse page 33

Slide 5: Colour of the lesion Including erythematous or non-erythematous Red skin Orange skin Yellow Skin Green fingernails Violet skin Shades of blue, silver, and gray Black skin

Slide 6: Borders Well/poorly defined

Slide 7: Size and shape of individual lesion Linear lesions Annular lesions Nummular lesions Target (bulls eye or iris) lesions Serpiginous lesions Reticulated lesions Herpetiform Zosteriform

http://www.msdmanuals.com/en-au/professional/dermatologic-disorders/approach-to-the-dermatologic-patient/description-of-skin-lesions