Integumentary system Quiz #4, Disorders of Skin Pigmentation  

1. A newborn presents with a large, darkly pigmented macular lesion covering her lower back. The lesion has irregular borders and is rough in texture. This lesion is most likely made up of an accumulation of: 

Question 1 of 5

2. A 25-year-old patient presents with depigmented patches on her hands and face. A biopsy of the affected skin shows a decreased number of melanocytes. Which of the following conditions is the patient most likely suffering from? 

Question 2 of 5

3. A patient complains of darkening of the skin on her cheeks, forehead, and upper lip during her recent pregnancy. The most likely diagnosis is: 

Question 3 of 5

4. A 30-year-old man presents with a firm, non-painful, hyperpigmented lesion on his back that has been slowly increasing in size. A biopsy of the lesion shows an increased number of melanocytes that are heavily pigmented. Which of the following is the most likely diagnosis? 

Question 4 of 5

5. A 45-year-old woman presents with multiple brown-black macules on her lower legs. She reports that these lesions developed after using a new brand of perfume. A biopsy of one lesion shows an increase in melanin in the basal layer of the epidermis. The most likely diagnosis is: 

Question 5 of 5


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