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13 Cards in this Set
- Front
- Back
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What UV radiation does SPF as used in sunscreens describe?
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UVB. UVA penetrates deeper and causes most visible sun damage. UVB penetrates more superficially and can cause sunburns and skin cancer.
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Describe...
1. Abrasion 2. Ulceration 3. Laceration 4. Echymosis 5. Contusion 6. Thermal burns 7. Sun burns What is an effective, primary intervention to treat burns? |
1. Erosion of epidermis, Superficial, heals without scarring
2. Deeper wound into dermis and below. Heals by secondary intention, granulation tissue formation 3. Incisional, clean cuts through skin; suturing recommended, primary intentions healing 4. Bruising, color changes becos Hg breaksdown into biliverdin (green/yellow) 5. Blunt trauma, edema and/or echymosis, cold application early 6. 1st degree - red; 2nd degree - blisters; 3rd degree - anesthetic 7. Rhytids (wrinkles), telangiectasia, lentigenes, solar purpura Apply cold compress. This allows for vasoconstriction to limit injury. |
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What may multiple lesions of cafe au lait indicate?
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Von Recklinghausen's Disease
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What are the ABCDEs of
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A - Assymetry
B - irregular Border C - irregular Coloration D - Diameter >6mm E - Evolution/change |
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Describe and differentiate the following:
Parakeratosis, Hyperplasia, orthokeratosis, acanthosis, dyskeratosis, hyperkeratosis |
Parakeratosis: Thickening of the stratum corneum with retained nuclei
Hyperkeratosis: Thickening of the stratum corneum Hyperplasia: Thickening of the epidermis Orthokeratosis: Thickening of the stratum corneum without retained nuclei Acanthosis: Thickening of the stratum spinosum Dyskeratosis: Pre-mature keratinization of keratinocytes |
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Which skin lesions are caused by infections?
How are they differentiated? |
Erythema multiforme - exanthema (erythematous papules)
Erythema nodosum - tender erythematous nodules Allergic vasculitis - palpable purpuric nodules |
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Which skin lesions are caused by autoimmune disorders?
How do you differentiate them? |
Periungal telangiectasia - SLE
Allergic vasculitis - antigen-antibody autoimmune complexes |
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Which lesions are caused by drug reactions?
How are they differentiated? |
Mobiliform drug reactions
Erythema multiforme Allergic vasculitis Erythema nodosum |
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Which skin lesion is seen in urticaria?
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Angioedema
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Which skin lesions shows civatte bodies (dyskeratosis)?
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Lichen planus
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In which skin lesions do you see koilocytes/halo bodies?
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Skin infections of viral origin
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What differentiates Lichen Planus from psoriasis histologically?
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Lichen planus has a thick horizontal stream of lymphocytes in the dermis and shows very little hyperplasia. there are civatte bodies.
Psoriasis shows excessive parakeratosis with elongated rete ridges |
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What causes Verica vulgaris?
Describe this lesion histologically. |
Verica vulgais/common wart caused by HPV.
Cup-like lesion, papillomatous retes, koilocytes, hypergranulosis, angiogenesis |
