Source: @jessicahaizman on IG A vesicular rash is a type of skin appearance where small, fluid-filled blisters appear — a bit like tiny bubbles on the skin. These blisters can be itchy, painful, or just uncomfortable, and they’re often a sign that the skin is responding to something deeper going on in the body. The most well-known cause of a vesicular rash is a herpes virus, such as the one that causes cold sores or shingles. These viruses infect skin cells and create small clusters of blisters