Anyone can get lichen planus. It is most common in middle-aged adults. Women get lichen planus in their mouths more often than men do. What causes most cases of lichen planus remains unclear.
Lichen planus often causes bumps that are shiny, firm, and reddish purple on skin. Sometimes the bumps have tiny white lines running through them, these lines are called Wickham’s striae.
You can get a few or many bumps, which can appear on different parts of the body. The most common places for these bumps to appear are the wrists, lower back, and ankles, but they can appear anywhere on the skin, including the genitals.
On the legs, the bumps tend to be darker, new bumps may appear as older bumps clear. When lichen planus develops on the skin, a person can have the patches of rough, scaly skin, and are most common on the shins and around the ankles. The bumps can itch, even blister at times and can be painful.
A simple rash might look like lichen planus, which is why its always best to schedule an appointment with your dermatologist if you think you might have this.