Purple, pruritic, polygonal, planar papules and plaques

So there you have it! The 6 P’s of Lichen Planus.

Purple – This rash often takes on a purplish hue.

Pruritic – Lichen planus is often itchy.

Polygonal – The rash can consist of geometric looking shapes.

Planar – Lichen planus is often “flat-topped.”

Papules – Raised bumps.

Plaques – Larger than papules, these are raised as well.

Keep in mind that lichen planus can take on many forms though, and while the 6 P’s mnemonic works for most forms of lichen planus on the skin, the rash can present differently as well and can also show up in the mouth, genital area, and scalp.

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