How can I be sure I have lichen planus?
Only your doctor can tell if you have lichen planus. If you have any of the symptoms listed above, you should see your doctor. Your doctor may want you to have blood tests or a skin biopsy. For a biopsy, a small bit of skin is taken from one of the purple bumps. It is sent to a laboratory to see if it is lichen planus.
Written by familydoctor.org editorial staff