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Symptoms
By Mayo Clinic staff
Lichen planus is an itchy rash, usually on the insides of the wrists, ankles and forearms. This rash can also appear on the scalp, lower back, neck, nails, and mucous membranes that line the mouth, nose, vagina, penis and anus. Lichen planus may cause scarring when it involves the nails or scalp.
Signs and symptoms of lichen planus include:
- Rows of flat-topped bumps that may vary in color from purple to pink to red
- Itching, which may be severe
- Soreness or a burning sensation when involving the mucous membranes
- Grooving, splitting, thinning or nail loss when involving the nails
- Redness, irritation, hair thinning and hair loss when involving the scalp
The initial attack may persist for weeks or months, and recurrences can continue over many years. Once the rash resolves, dark brown or gray spots may linger on the skin. These may be more noticeable if you have darker skin.
Signs and symptoms of oral lichen planus include:
Oral lichen planus — lichen planus of the mouth — may appear before the skin rash and be the only evidence of the disease.
- Small, pale raised areas or bumps that form a lacy network on the tongue or inside the cheeks
- Shiny, red, slightly raised patches on the tongue or cheeks
- Red, open sores in the mouth
- Pain, tenderness, burning or itching in the mouth
- Dry mouth
- A metallic taste or a blunted taste sensation
When to see a doctor
Consult your family doctor or a dermatologist if you suspect you have lichen planus, especially if it involves the mucous membranes of your mouth or genitals. Your doctor can recommend a treatment plan to reduce inflammation and itching, and he or she can monitor any changes in the affected tissues.
Also, be sure to seek medical advice if your signs and symptoms worsen or they don't improve with self-care measures. You may need a stronger medication to manage the problem.
