Shingles is more common in people with weakened immune systems from HIV infection, chemotherapy and stress. In fact, shingles is most commonly caused by stress and afflicts people of all walks of life, from professionals to politicians to celebrities. | Shingles is more common in people with weakened immune systems from HIV infection, chemotherapy and stress. In fact, shingles is most commonly caused by stress and afflicts people of all walks of life, from professionals to politicians to celebrities. |