Podcast
Questions and Answers
Which term describes a wider defect with partial thickness epidermal loss?
Which term describes a wider defect with partial thickness epidermal loss?
What type of skin lesion involves the accumulation of pus and appears white on the surface?
What type of skin lesion involves the accumulation of pus and appears white on the surface?
What is a linear atrophy with fragmented collagen and elastin fibers commonly referred to as?
What is a linear atrophy with fragmented collagen and elastin fibers commonly referred to as?
Which term is used for a deep fluid-filled lesion that often requires palpation for differentiation?
Which term is used for a deep fluid-filled lesion that often requires palpation for differentiation?
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Which type of pigmentation change is characterized by an absence of color in the skin?
Which type of pigmentation change is characterized by an absence of color in the skin?
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What is typically considered a primary skin lesion that is raised and less than 1 cm in diameter?
What is typically considered a primary skin lesion that is raised and less than 1 cm in diameter?
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Which of the following lesions is classified as a secondary lesion?
Which of the following lesions is classified as a secondary lesion?
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What type of primary lesion is described as fluid-filled and greater than 1 cm in size?
What type of primary lesion is described as fluid-filled and greater than 1 cm in size?
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Which type of primary lesion is characterized by being flat and greater than 1 cm?
Which type of primary lesion is characterized by being flat and greater than 1 cm?
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What is the term for a secondary lesion characterized by abnormally thick scar tissue that remains within the injury boundary?
What is the term for a secondary lesion characterized by abnormally thick scar tissue that remains within the injury boundary?
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Which primary lesion is defined as a raised lesion with deep dermal localization that is greater than 1 cm?
Which primary lesion is defined as a raised lesion with deep dermal localization that is greater than 1 cm?
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Which type of secondary lesion involves the shedding of sheets of keratinocytes?
Which type of secondary lesion involves the shedding of sheets of keratinocytes?
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Identifying which primary lesion is a transient, well-defined erythema and edema?
Identifying which primary lesion is a transient, well-defined erythema and edema?
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Study Notes
Primary Lesions
- Primary lesions are the initial skin changes
- They are categorized by their surface features and depth
- Flat lesions include macules (<1 cm) and patches (>1 cm)
- Raised lesions include papules (<1 cm), plaques (>1 cm), nodules (<1 cm), and tumors (>1 cm)
- Fluid-filled lesions encompass vesicles (<1cm) and bullas (>1 cm)
- Hemorrhagic lesions include petechiae (<3mm), ecchymosis (>3mm), and hematoma (deep)
- Other primary lesions include urticaria/hives, burrows (scabies), open comedones, and closed comedones
Secondary Lesions
- Secondary lesions result from the progression or manipulation of primary lesions
- They are categorized into changes in skin thickness and accumulations
- Epidermal accumulations include scales, crusts, lichenification, and exfoliation
- Changes in skin thickness include atrophy, keloid scars, hypertrophic scars, and striae
- Changes in pigmentation include hyperpigmentation, hypopigmentation, and depigmentation
- Surface defects include fissures, erosions, ulcers, and excoriations
- Accumulations include pustules and abscesses
- Miscellaneous secondary lesions include cysts and scabs
Additional Dermatologic Descriptors
- Descriptive terms like color, texture, and firmness are important for examination.
- Location, arrangement (like grouped or scattered), and size are crucial parts of description.
- Clinical examples of these descriptions are provided in the figures (1.34-1.38).
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Description
This quiz covers the fundamental concepts of primary and secondary skin lesions in dermatology. You'll learn to categorize various skin changes based on their features, depth, and progression. Test your knowledge on flat, raised, fluid-filled, and hemorrhagic lesions, as well as the implications of secondary changes.
