Apr 30, 2021 · A blister is a painful skin condition where fluid fills a space between layers of skin. They form when something — like too-tight shoes — repeatedly rubs against your skin.

A blister is a small pocket of body fluid (lymph, serum, plasma, blood, or pus) within the upper layers of the skin, usually caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection.

Oct 15, 2025 · If a blister breaks, wash the area with soap and water, then apply a bandage. If a blister is very large or painful, your doctor may drain it and apply an antibacterial cream to prevent infection.

May 1, 2024 · Pressure, heat, moisture, friction or burns can cause a blister to form on the skin. For example, a blister may form on your heel when it rubs against the inside of a shoe.

Jun 24, 2025 · Most are shaped like circles. Depending on the cause, your blister could itch or hurt a lot or a little. They can appear as a single bubble or in clusters.

Jun 6, 2025 · A blister, or vesicle, is a raised portion of skin filled with fluid. You’re probably familiar with blisters if you’ve ever worn ill-fitting shoes, but they can be caused by many other...

Dec 4, 2025 · Once the blister has drained naturally, wash the area with soap and water. Next, apply petroleum jelly and a bandage. Do not pop the blister.

A blister is a bubble containing fluid under the top layers of skin. Blisters are usually caused by injury, allergic reactions, or infections. The symptoms of a blister may look like other skin conditions. If you …

Sep 9, 2025 · A blister looks like a tight bubble or a small sac of soft fluid. This article walks you through home treatment steps. Learn about autoimmune blisters.

Mar 17, 2025 · Normally you don't want to drain a blister, because of the risk of infection. But if a blister is large, painful, or looks like it will pop on its own, you can drain the fluid.