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Chapter 86. Seborrheic Dermatitis

Distribution

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Fig. 86-1 A

Scaly papules and plaques in characteristic distribution.


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Fig. 86-1 B

Scaly papules and plaques in characteristic distribution.


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Fig. 86-2

Widespread papules and plaques in the central third of the face, neck, and chest.


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Fig. 86-3

Scaly, ill-defined plaques on the bridge of the nose, malar region, paranasal region, and chin.


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Fig. 86-4

Scaly red papules and plaques on the face and neck.


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Fig. 86-5

Blotchy papules and plaques on the forehead, nose, malar regions, cheeks, and chin.


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Fig. 86-6

Subtle scaly plaques with scalloped borders on a scalp and forehead. The numerous tan macules are solar lentigines.


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Fig. 86-7

Hypopigmented scaly papules and patches.


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Fig. 86-8

Scaly papules and plaques on the malar region especially.


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Fig. 86-9

Scaly macules and plaques, some of them nummular and others with scalloped outlines.


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Fig. 86-10

Scaly patch and fissure.


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Fig. 86-11

Scaly patches in the hairy area of the chest have scalloped outlines.


Individual Lesions

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Fig. 86-12

Scaly papules and plaques.


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Fig. 86-13

Scaly patches and subtle plaques, some of which have ill-defined margins.


Chronological Sequence

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Fig. 86-14

Pink macules and papules, some of which are covered by delicate scales, in a cluster.


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Fig. 86-15

Scaly papules and plaques.


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Fig. 86-16

Scaly plaques.


Variation

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Fig. 86-17

Extensive seborrheic dermatitis in a patient infected by HIV.


New! Additional Images

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Fig. 86-18

Seborrheic dermatitis: The reddish lesion stopped by furfuraceous scale on the upper lip, nasolabial fold, and malar region are typical of the process.


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Fig. 86-19

Seborrheic dermatitis: The ill-defined pink lesions on the forehead, near the eyebrows, the paranasal and nasolabial folds, the malar regions, and the chin are characteristic.


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Fig. 86-20

Seborrheic dermatitis: Lesions often involve the “butterfly” (malar) region affected often by lupus erythematosus, as well as the center of the forehead and the region of the eyebrows, the latter not being a site of predilection for lupus erythematosus.


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Fig. 86-21

Seborrheic dermatitis: The inflammatory process in the nasolabial fold is characterized by ill-defined redness affiliated with furfuraceous scales.


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Fig. 86-22

Seborrheic dermatitis: Ill-defined zones of redness covered by fine scales on the malar region and in the paranasal and nasolabial folds are typical of the disease.


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Fig. 86-23

Seborrheic dermatitis: Florid expression with periocular, nasolabial, and perioral involvement by scaly and crusted papules.


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Fig. 86-24

Seborrheic dermatitis: As is seen in this patient, the disease can be differentiated clinically from lupus erythematosus and psoriasis by virtue of involvement of nasolabial folds and eyebrows.