Blister: meaning, definitions and examples

A blister is often used to describe a small pocket of fluid within the upper layers of the skin, often caused by friction or burns.

• After walking in new shoes for hours, she noticed a painful blister on her heel.
• Sunburn can sometimes cause blisters on the skin.

A bubble is typically used to describe a small, round, thin-walled pocket of gas within a liquid or a solid. It is not usually associated with medical conditions.

• The children loved blowing bubbles in the park.
• There was a bubble in the paint on the wall.

A vesicle is a medical term used to describe a small fluid-filled sac within the body, often caused by viral infections or immune responses. It is a more technical term used in medical contexts.

• The patient was diagnosed with chickenpox, which caused numerous vesicles on the skin.
• A vesicle can form as a result of an allergic reaction.

A pustule refers to a small, inflamed, pus-filled blister on the skin, often associated with infection or acne. This term generally carries a negative connotation.

• The doctor examined the pustule to determine the best course of treatment.
• Acne can sometimes result in painful pustules on the face.