Shingles can cause a variety of inconvenient symptoms, with the rash being one of the most common and uncomfortable. It can last for 2 - 4 weeks, causing significant discomfort. As the healing process progresses, the rash will go through different phases. At the beginning, it will simply appear as a flat rash without any blisters. However, within a couple of days, it will transform into fluid-filled blisters that may contain blood and eventually burst. Although this may seem alarming, it is a normal part of the shingles cycle. After 7 - 10 days, the blisters will dry up and form scabs. And once they have completely dried out, they will fall off on their own during the final stage of healing, which typically takes 2 - 4 weeks.