Shingles is very commonly brought on by stress. It's latent chickenpox virus, which is usually kept in check by the immune system, but stress depresses immune

Shingles is very commonly brought on by stress. It's latent chickenpox virus, which is usually kept in check by the immune system, but stress depresses immune response. I had a coworker who developed shingles as we were nearing the deadline on a project that had all sorts of problems in layers of the stack we didn't control, and my sister developed shingles after being laid off. The first thing I associate with that disease is stress.