Diseases and Conditions
Lichen planus
Overview
Symptoms
Causes
Risk factors
Complications
Diagnosis
Treatment
Lifestyle and home remedies
Alternative medicine
Preparing for an appointment
Causes
Lichen planus occurs when your immune system attacks cells of the skin or mucous membranes. It's not clear why this abnormal immune response happens. The condition isn't contagious.
Lichen planus can be triggered by:
- Hepatitis C infection
- Flu vaccine
- Certain pigments, chemicals and metals
- Pain relievers, such as ibuprofen (Advil, Motrin IB, others) and naproxen (Aleve, others)
- Certain medications for heart disease, high blood pressure or arthritis
