I tried many methods to try to stop or reduce the pain from shingles (herpes zoster – the chickenpox virus). This was after I found capsaicin (the only thing recommended by my doctor) to be far more uncomfortable than I imagined. This is simply my experience — check with your doctor for any potential negative effects.
If you don't want to watch the whole thing, jump to 9:12 for the summary of what worked best for shingles pain.