Any damage or abnormal change in an organism’s tissue, usually caused by disease or injury, is referred to as a lesion. The word lesion comes from the Latin word laesio, which means “injury.” Lesions may occur in plants as well as animals. A skin lesion is described as any area of the skin that differs from the surrounding skin in terms of color, shape, size, and texture. Skin lesions are very common, and they usually arise as a result of localized skin damage, such as sunburns or contact dermatitis. Others, on the other hand, can be symptoms of underlying conditions including infections, diabetes, or autoimmune or genetic disorders. Although the majority of skin lesions are benign and harmless, some are malignant or premalignant, which means they have the potential to develop into skin cancer.
How Many Types of Skin Lesions Are There?
Although, it is difficult to tell how many types of lesions are there because lesion is a broad1 category to classify into types, but it is easier to tell main types of skin lesions that are present. The two main types of skin lesions are primary and secondary2.
Primary skin lesions originate from previously healthy skin and are linked to a specific cause. On the other hand, secondary skin lesions develop from the evolution of a primary skin lesion, either due to traumatic manipulation, such as scratching or rubbing, or due to its treatment or progression. Skin lesions can be present in a various types of sizes, shapes, and forms. Furthermore, skin lesions can arise alone or in groups, and they can be localized in a particular place or spread throughout the entire body.
What Causes Skin Lesions?
An infection on or in the skin is the most common cause of a skin lesion. Later, in some diseases skin lesions can spread through direct skin to skin contact. Wart is an example of skin lesion, which is caused by human papillomavirus (HPV) and is spread from person to person by direct skin-to-skin contact. Direct touch can also spread the herpes simplex virus, which causes cold sores and genital herpes. Skin lesions can appear all over your body if you have a systemic infection, which is an infection that spreads throughout your body. Examples include chickenpox and shingles. MRSA and cellulitis are two infections that cause skin sores and can be fatal.
Moles and freckles, for example, are hereditary skin lesions. And also, birthmarks are lesions, that are present at the time of birth. Others, such as allergic eczema and contact dermatitis, are the result of an allergic reaction. Skin sensitivity can be caused by a variety of factors, including poor circulation or diabetes, which can lead to skin lesions. The other causes of skin lesions are allergies, side effects of certain medications such as corticosteroids or chemotherapy, contact with irritant substances, unprotected sun exposure, severe burns, insect bites, poor circulation, vitamin deficiencies, systemic diseases such as autoimmune diseases, some infectious diseases, liver and kidney disease, and cancer.