Shingles, a viral infection caused by the reactivation of the chickenpox virus, results in a painful blistering rash along one side of the body or face from nerve inflammation. There has been scientific speculation that such inflammation may increase a person’s risk of dementia. However, a new study has found that shingles is not associated with an increased risk of dementia. The study is published in the June 8, 2022, online issue of Neurology.