The shingles rash typically lasts for two to four weeks from the time the blisters erupt until they heal, according to WebMD. Pain associated with the rash tends to decrease over time but may last months or years.
The shingles rash typically appears days or weeks after the initial symptoms of itching, tingling or pain, states WebMD. The rash forms blistered areas in a band or patch of skin, most often on one side of the body. The blisters erupt and start to crust over a week or two later. It usually takes another two weeks for those sores to heal.