Thanks for posting your query at DoctorSpring.com
I can understand your concern.
You seem to be having shingles. It's also called herpes zoster. The treatment for it would be oral antiviral medication called valacyclovir. You will need a prescription for that.
Application of mupirocin cream over the lesions will be useful. In case of pain, paracetamol tablet can be taken.
Please let me know if you have any queries.
Patient replied :
how long will this take to clear up? I am 75 years old patientold.
I have the rash for one day will it spread to more areas?
It usually takes a week to ten days to clear up with proper treatment. With timely treatment the spread can be prevented. It is usually confined to one side of the body.