welcome to healthcare magic forum
lichenoid chronica is long lasting disease and there is no particular cure for it .
so we can controlled it ,not cure it .
by mean of cream ,phototherapy
,it can be controlled
once it is better you must continue some cream and moisturizer daily even you feel better.
better to consult good dermatologist
and get all advise
avoid sun light and dusty environment
i hope i answered your question.