Best Supplements for Lichen Planus can help reduce the itching and discomfort. Lichen Planus Natural Treatment may help relieve symptoms linked with skin and mouth. One common cause of Rashes on the Skin or Inside of The Mouth is a condition called Lichen Planus, which can affect the skin and mucous membranes. The causes of Rashes on the Skin or Inside of The Mouth, particularly Lichen Planus, The Best Supplements for Lichen Planus for managing and treating this condition. So, if you or someone you know is struggling with Rashes on the Skin or Inside of The Mouth, This condition and how to find relief.