What autoimmune disease causes lichen planus?
Lichen planus (LP) is thought to be caused by a T cell–mediated autoimmune reaction against basal epithelial keratinocytes in people with genetic predisposition.
What foods trigger lichen planus?
Spicy, acidic, and citrus foods and beverages can aggravate lichen planus. You may need to avoid eating foods made with chili peppers, curry, large amounts of ginger or garlic, or other spicy dishes. Tomato and tomato products may cause problems. Similar is the case with lemons, limes, oranges, and grapefruits.
What does lichen planus on skin look like?
The symptoms of lichen planus of the skin are: purple-red coloured bumps (papules) that are slightly raised, shiny and have a flat top. The papules usually measure 3-5mm in diameter and may also have irregular white streaks (Wickham’s striae)