NHS Choices: Lichen Planus - Provides information on this itchy, non-infectious rash. Includes details of symptoms, causes, diagnosis, treatment, complications and prevention. Wikipedia: Lichen Planus - Encyclopedia article on this chronic disease that affects the skin and oral mucosa. DermNet NZ: Lichen Planus - Provides information on this condition and its clinical features, with many images showing lesions of the skin, mouth, scalp and nails. eMedicine: Lichen Planus - Detailed article by Tsu-Yi Chuang, MD, MPH and Laura Stitle, MD. UK Lichen Planus - Support group. Includes information on membership, downloadable informational leaflets and a forum. Patient: Doctor: Lichen Planus - Article on this skin condition including its epidemiology, presentation, histology, differential diagnosis, management and prognosis. Patient: Lichen Planus - Factsheet for patients with symptoms, diagnosis, treatment and outlook.