Anxiety rash is a skin reaction—often presenting as hives, redness, or small itchy bumps that occur in response to emotional or psychological stress. It is not caused by external allergens or ...

If you have hives, stress can cause a flare-up of hives. Such "stress rash," the sudden appearance of swollen, red, or skin-colored bumps, most often on the face, neck, chest, or arms, may ...