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FIGURE 88.25 Scaly hyperpigmented patches consistent with tinea versicolor.

PAPULOSQUAMOUS ERUPTIONS/SCALY RED PATCHES
AND PLAQUES
Papulosquamous eruptions are discussed in Chapter 70 Rash: Papulosquamous
Eruptions and Viral Exanthems . These are conditions that are a mixture of
papules or plaques with scale. They are often red but can be more pink or purple
in color as in lichen planus.

Conditions That Lack Pruritus
Pityriasis Rosea
For more information about pityriasis rosea, see Chapter 70 Rash:
Papulosquamous Eruptions and Viral Exanthems . This is a harmless skin
condition that generally occurs in preadolescents to adults and contains scaly pink
or red plaques often in a “Christmas tree” distribution on the back ( Fig. 88.18 ).
There are atypical variants that are more papular and scaly and include the head
and neck. One should consider secondary syphilis in the differential of pityriasis
rosea ( Fig. 88.20 ). Guttate psoriasis should also be included in the differential.
Secondary Syphilis
Please see previous discussion in this chapter.

Pruritic Papulosquamous Disorders