Questions and Answers
What color of skin is typically associated with jaundice?
Which condition is characterized by the rapid swelling of a lesion when stroked?
What skin color may indicate a Pseudomonas aeruginosa infection?
Which skin lesion color is typically seen in hypercarotenemia?
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What color can deep dermal nevi appear as?
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What is a common cause of black eschars on the skin?
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Which of the following is a characteristic color of a heliotrope eruption?
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What skin coloration might result from the deposition of silver in the skin?
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Which type of lesion is characterized by yellowish, waxy appearances and can indicate lipid disorders?
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Which condition is characterized by indurated skin resulting from infiltration or inflammation?
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Which skin lesion is specifically known for its central indentation and is usually viral in origin?
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In which body areas are lesions from psoriasis typically found?
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Which condition is known for affecting areas with a high density of apocrine glands?
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Which skin condition commonly presents with patchy white spots and may be more pronounced around the eyes and mouth?
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What is the primary feature of discoid lupus erythematosus lesions?
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What should healthcare professionals be cautious of when evaluating the color of skin lesions?
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What characterizes a macule?
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Which of the following is an example of a papule?
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What is true about plaques in the context of skin lesions?
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Which lesions are often incorrectly described as maculopapular?
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What is the primary difference between macules and patches?
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Which type of lesion is characterized by being palpable and usually less than 10 mm in diameter?
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What can be considered an example of a macule?
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Which statement regarding actinic keratoses is correct?
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Study Notes
Standardized Description of Skin Lesions
- Various terms are used to describe skin lesions: lesion type, configuration, texture, location/distribution, and color.
- Rash refers to a temporary eruption on the skin.
Lesion Type (Primary Morphology)
- Macules: Flat, nonpalpable lesions < 10 mm; examples include freckles and flat moles.
- Patches: Large macules, can be seen in rickettsial infections and rubella.
- Papules: Elevated, palpable lesions < 10 mm; examples include warts and insect bites.
- Plaques: Elevated lesions > 10 mm; can be flat-topped or rounded.
- Induration: Deep skin thickening due to edema or inflammation; indicates conditions like cancer or panniculitis.
- Umbilicated lesions: Central indentation, typically viral; seen in molluscum contagiosum.
- Xanthomas: Yellowish, waxy lesions associated with lipid disorders; xanthelasma of the eyelid indicates hypercholesterolemia.
Location and Distribution of Skin Lesions
- Assess if lesions are single or multiple and their affected body areas.
- Patterns of distribution can provide diagnostic clues; e.g., psoriasis affects elbows and knees, while lichen planus often appears on wrists and lower legs.
- Vitiligo may present as patchy or grouped lesions, particularly around eyes and mouth.
- Discoid lupus erythematosus presents on sun-exposed skin of the face.
- Hidradenitis suppurativa occurs in areas with many apocrine glands, such as the axillae.
Color of Skin Lesions
- Natural skin color can alter the appearance of lesion color.
- Red (Erythema): Indicative of inflammation or infection; common in tumors.
- Orange: Seen in hypercarotenemia due to excessive beta-carotene.
- Yellow: Associated with jaundice and xanthomas.
- Green: May suggest Pseudomonas aeruginosa infection (e.g., green nails).
- Violet: Can result from hemorrhage or vasculitis; examples include Kaposi sarcoma.
- Lilac: Characteristic of dermatomyositis.
- Blue/Gray: Result of medications or metal deposits; conditions like argyria or minocycline pigmentation.
- Black: Can indicate melanocytic lesions such as melanoma or necrotizing infections.
Clinical Signs of Skin Lesions
- Dermatographism: Skin response leading to raised red lines after light scratching, affecting up to 5% of individuals.
- Darier sign: Rapid swelling of a lesion upon stroking; indicative of conditions like urticaria pigmentosa.
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Description
Explore the standardized language used to describe skin lesions, including their types, configurations, textures, and distributions. This quiz will help deepen your understanding of dermatological terminology and improve your ability to assess skin conditions accurately.
