History, examination and classification of skin lesions Flashcards
How would you describe the following?
Atrophy - thinning of the skin
How would you describe the following?
Papule - small, palpable, circumscribed lesion <0.5cm
How would you describe the following?
Macule - flat, circumscribed non-palpable lesion
How would you describe the following?
Bulla - Large fluid-filled blister
How would you describe the following rash?
Petechial rash - pinpoint macule of blood in the skin - <3mm diameter
How would you describe the following rash?
Crusted - Dried Serum/exudate on the skin
How wouldyou describe the following skin lesion?
Plaque - Large, flat-topped elevated, palpable lesion
How would you describe the following?
Ecchymosis - Large confluent area of purpura
How would you describe the following?
Purpura - macule/papule of blood in the skin which does not blanch on pressure (>3mm diameter)
How would you describe the following?
Erosion - denuded area of skin (partial epidermal loss)
How would you describe the following?
Pustule - yellowish/white pus filled lesion
How would you describe the following?
Excoriation - scratch mark
How would you describe the following?
Fissuring - deep linear crack or crevice
How would you describe the following?
Telangiectasia - Abnormal visible dilatation of blood vessels
How would you describe the following?
Lichenification - Thickened epidermis with prominent normal skin markings
How wouldyou describe the following?
Ulceration - deeper denuded area of skin (full epidermal and dermal loss)
How would you describe the following?
Vesicles - small fluid filled blisters
How would you describe the following?
Nodule - Large papule (>0.5 cm)
How would you describe the following rash?
Weal - Itchy raised “nettle-rash” like swelling due to oedema
What are Kobner Phenomena?
Skin lesions which develop at site of the injury
What specific aspects would you want to ask about tin the history for skin diseases?
- Time course of rash
- Distribution of lesions
- Symptoms (e.g. itch or pain)
- Family history (especially of atopy and psoriasis)
- Drug/allergy history
- Past medical history
- Provoking factors (e.g. sunlight or diet)
- Previous skin treatments.
What investigations would you consider in someone with a skin lesion?
- Swabs/Blister fluid samples
- Skin scrapes
- Nail smapling
- Wood’s light
- Blood tests - Serology, autoantibodies
- Patch test
- Biopsy
- Urine
- Dermatoscopy - pigmented lesion examination
What examining a skin lesions, what would you want to look at?
- Shape
- Pattern
- Border
- Surface
- Elevation
- Colour
- Temperature
- Evolution
- Distribution
