Lichen planus

What is Lichen Planus?

Lichen Planus is a chronic inflammatory skin and mucosal condition that causes itchy, purple or reddish flat-topped bumps on the skin, and white, lacy patches inside the mouth or genitals. It is an autoimmune disorder where the immune system mistakenly attacks the skin and mucous membranes.

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Causes of Lichen Planus:

🛑 Autoimmune reaction (immune system attacks healthy skin/mucosa)
💊 Medications (NSAIDs, beta-blockers, antimalarial drugs)
🦠 Viral infections (Hepatitis C is linked to some cases)
🧬 Genetics (family history may play a role)
⚡ Allergic reactions (to dental fillings, metals, or chemicals)

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Types & Symptoms:

1️⃣ Cutaneous Lichen Planus (Skin) – Purple, itchy, flat bumps, often on wrists, ankles, or lower back.
2️⃣ Oral Lichen Planus (Mouth) – White lace-like patches (Wickham’s striae) on gums, tongue, or inner cheeks, sometimes painful.
3️⃣ Genital Lichen Planus – Painful red or erosive lesions in genital areas.
4️⃣ Scalp (Lichen Planopilaris) – Hair loss and scarring on the scalp.
5️⃣ Nail Lichen Planus – Ridges, splitting, or nail loss.