What Is Lichen Planus?
2. Causes
Lichen planus is a type of autoimmune condition. This means it is caused by the patient’s immune system attacking the cells in their body. It is not at all well understood why this happens, but we do know that there are certain factors that can trigger the condition. We also know it is not contagious.
Lichen planus will sometime be triggered by the flu vaccine, although this is rare. Some medications for arthritis or high blood pressure can trigger the condition, as can medications for heart disease. Some pain killers are also a potential trigger, while hepatitis C is another potential underlying cause.
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