Shingles is a painful rash that develops on one side of the face or body. The rash consists of blisters that typically scab over in seven to 10 days and clear up fully within two to four weeks.

Shingles may lead to serious complications involving your eyes, including blindness, as well as long-term nerve pain (postherpetic neuralgia or PHN). About one in 10 people who get shingles develop nerve pain that can last for months or years after the rash is gone.