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Skin Color and Pigmentary Disorders

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Questions and Answers

What is the principal determinant of skin color?

Reduced hemoglobin

Melanin pigment (correct)

Carotenoids

Oxyhemoglobin

What is the term for excessive melanin production in the skin?

Dermatosis

Hyperchromia

Hypermelanosis (correct)

Hypopigmentation

What is the term for the yellow-orange discoloration of the skin due to excessive ingestion of colored fruits and vegetables?

Melanosis

Carotenoderma (correct)

Hyperchromia

Carotenemia

What is the rare condition where melanin production is stimulated by excessive circulating melanocyte-stimulating hormone (MSH)?

Generalized hyperpigmentation Signup and view all the answers

In patients with Addison disease, where is hyperpigmentation more prominent?

On pressure areas, skin folds, scars, and within the mouth Signup and view all the answers

What is the characteristic distribution pattern of erythromelanosis follicularis?

Symmetrical with sharp demarcation from normal skin Signup and view all the answers

What is the typical age of onset for freckles or ephelides?

Around 5 years old Signup and view all the answers

What is the name of the condition characterized by an increased number of melanocytes?

Lentigines Signup and view all the answers

What is the treatment option for freckles or ephelides?

Laser therapy (picosecond ND/YAG) Signup and view all the answers

What is the term for the presence of lentigines in exceptionally large numbers or in a distinctive distribution?

Lentiginosis Signup and view all the answers