Conditions that cause skin lesions

Acne is commonly located on the face, neck, shoulders, chest, and upper back.

A cold sore is a red, painful, fluid-filled blister that appears near the mouth and lips.

An actinic keratosis is a thick, scaly, or crusty skin patch that’s typically less than 2 centimeters (cm), or about the size of a pencil eraser.

Allergic eczema leaves the skin itchy, red, scaly, or raw.

Chickenpox leaves clusters of itchy, red, fluid-filled blisters in various stages of healing all over the body

Shingles may be accompanied by low fever, chills, headache, or fatigue.

Cellulitis leaves red, painful, swollen skin with or without oozing that spreads quickly.