Thanks for posting your query at DoctorSpring.com
I can understand your concern. I reviewed the pictures.
This is shingles. Its also known as herpes zoster. I would recommend taking oral anti viral called valacyclovir. It will require a prescription from your doctor.
Application of Mupirocin cream on the lesions will aid in healing.
Tab. Crocin will aid in relieving any pain.
Please let me know if you have any queries.