It seems that you may be having lichen planus
Do not worry, it is benign condition.
There may be some factors which pracipitate the disease LP.
Factors may be sunrays, trauma,stress
You should consultdermatologist for perfect diagnosis and treatment.
If needed, skin biopsy
may be done for confirming the diagnosis.
Local application of steroid cream may be helpful.
Antihistaminics and short course of steroids
in tappering dose may be taken.
Avoid stress and worries.
I hope you got my answer.
Dr. Ilyas Patel MD