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What is the Lichen planus pigmentosus (LPP) ?

• Lichen planus pigmentosus (LPP) is a rare form of lichen planus.
• It is characterized by oval or irregularly-shaped brown to gray-brown macules and patches on the skin.
• Areas that are exposed to sun such as the forehead, temples and neck are most commonly affected

The cause of the disease?

• The underlying cause of lichen planus pigmentosus is currently unknown.
• However, studies suggest that the condition may be triggered by viral infections, UV light

Treatment?

• There is currently no consensus about treatment for lichen planus pigmentosus (LPP).
• Management includes avoiding things that make it worse in each case, such as sun exposure or friction in body folds (via weight loss or wearing loose clothing)
• Treatment options may include

1. Vitamin A
2. Topical corticosteroids
3. Topical calcineurin inhibitors such as tacrolimus (medications that are typically used to treat eczema)
4. Dapsone (a medication used to treat leprosy and skin infections)
5. Skin lightening agents
6. Laser therapy