Lichen planus pigmentosus (LPP) is a relatively uncommon variant of lichen planus, characterized by dark patches on the skin, especially in sun-exposed areas. It is not a disease, but a skin condition.
Here's a more detailed breakdown:
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Nature of LPP: LPP is considered a subtype of lichen planus, a chronic inflammatory skin condition. Unlike classic lichen planus, which often presents with itchy, purplish bumps, LPP mainly manifests as hyperpigmentation (darkening) of the skin.
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Appearance: The condition presents as flat, brown to gray-brown spots (macules) or larger patches of discolored skin. The shape of these patches can be oval or irregular.
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Location: LPP commonly affects areas exposed to the sun, such as:
- Forehead
- Temples
- Neck
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Symptoms: The primary symptom is the change in skin color. Itching may or may not be present.
In summary, lichen planus pigmentosus is a form of lichen planus distinguished by its presentation as dark skin patches, primarily on sun-exposed areas, sometimes with accompanying itchiness.
