Thanks for posting your query at DoctorSpring.com
I can understand your concern.
This is called lichen planus. Its called a papulosquamous condition. Its chronic. There are purple coloured papules.
The treatment can be long term. You can start applying cortisone cream twice a day till you get a prescription for mometasone cream.
For itching you can take an anti histamine like claritin .
Feel free to discuss further,