Hello, Lichen planus is a skin rash triggered by the immune system. It’s not known why the immune response occurs. For mild cases of lichen planus, which usually clear up in weeks or months, you may not need any treatment. If the symptoms are uncomfortable or severe, your doctor can prescribe medication. For mild cases of lichen planus, which usually clear up in weeks or months, you may not need any treatment. If the symptoms are uncomfortable or severe, your doctor can prescribe medication. There is no cure for lichen planus, but medications that treat the symptoms are helpful and some may even be able to target a possible underlying cause. Medications include retinoids, steroids, antihistaminics and light therapy. Talk to your doctor before adding OTC products to your treatment plan. This way you’ll be certain that nothing you might take will interact with prescription medications you’re taking. Lichen planus can be uncomfortable but is not dangerous. With time and a combination of home and prescription treatments, your rash will clear up. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Prabhash Verma, General & Family Physician