Skin lesions are areas of skin that have an abnormal appearance compared to the surrounding skin. They can vary in size, shape, color, and texture, and may be flat or raised. Common types of skin lesions include moles, warts, rashes, and blisters. These lesions can result from various causes, including infections, allergies, or skin conditions like eczema. Most skin lesions are benign, but some may indicate underlying health issues. It is important to monitor any changes in existing lesions or the appearance of new ones. If a lesion is painful, itchy, or shows signs of infection, consulting a healthcare professional is recommended for proper evaluation and treatment.