Dr. Shail Agarwal

Lichen Planus

Lichen planus (LIE-kun PLAY-nus) is a condition that can cause swelling and irritation in the skin, hair, nails and mucous membranes. On the skin, lichen planus usually appears as purplish, itchy, flat bumps that develop over several weeks. In the mouth, vagina and other areas covered by a mucous membrane, lichen planus forms lacy white patches, sometimes with painful sores.

Most people can manage typical, mild cases of lichen planus at home, without medical care. If the condition causes pain or significant itching, you may need prescription drugs. Lichen planus isn't contagious.

Symptoms

The signs and symptoms of lichen planus vary depending on the areas affected. Typical signs and symptoms are:

Purplish, flat bumps, most often on the inner forearm, wrist or ankle, and sometimes the genitals
Itching
Blisters that break to form scabs or crusts
Lacy white patches in the mouth or on the lips or tongue
Painful sores in the mouth or vagina
Hair loss
Change in scalp color
Nail damage or loss

When to see a doctor

See your doctor if tiny bumps or a rash-like condition appears on your skin for no apparent reason, such as a known allergic reaction or contact with poison ivy. Also see your doctor if you experience any signs or symptoms associated with lichen planus of the mouth, genitals, scalp or nails.

It's best to get a prompt and accurate diagnosis because a number of skin and mucosal conditions can cause lesions and discomfort.