Parapsoriasis refers to one of a group of skin disorders that are characterized primarily by their resemblance to psoriasis (red, scaly lesions), rather than by their underlying cause.

[2] The parapsoriasis groups, described and debated for nearly a century, has spawned a confusing nomenclature.

There are some authors who prefer to limit the term "parapsoriasis" to large- and small-plaque variants only.

[2] However, the following classification scheme is now generally accepted:[3]: 450

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