Our expert says:
The cause of lichen planus is not known. A type of inflammation develops in the skin which causes the rash. However, the cause of the inflammation is not known. One theory is that the immune system may be 'triggered' by a virus or other factor in the environment to attack cells on the skin which leads to the inflammation.
Please post to cyberdoc for further information.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.