Allergic blisters are fluid-filled bumps that can form on the skin as part of an immune response to an allergen. Some allergens, like poison ivy, frequently cause blisters for most people who come ...

People with HS are also more likely to have: clusters of small, painful fluid-filled bumps on the skin and mucous membranes bumps typically located on the mouth, genitals, or anus Herpes outbreaks ...