What Are The Signs And Symptoms Of Shingles?

What are the symptoms of shingles? My wife was under enormous stress for about a month as she worked two jobs and muddled through about five hours of sleep a night. She developed a small rash on her chin which has now spread to her entire chin area. It appears red, slightly swollen and has tiny blisters and she says it burns. We thought once her event deadline had passed and the stress and sleep was back to normal that everything would go away, but the rash persists (1+ months now) and I see her steadily growing more and more tired. She can't get in to see her usual dermatologist for another two weeks (she's a redhead and has a billion moles). Should I make her go to her GP instead or wait it out? - Pamela in Seattle