Skin lesion is an alteration in the integumentary system or skin. There are in two forms, the primary skin lesion and secondary skin lesion. Secondary skin lesions are not initially appears; usually result from a trauma or chronic infection.
The following are the major types of secondary skin lesions:
Lesions involved the upper surface of the skin or the epidermis and the lower portion or the skin or dermis. It can result from a trauma or bacterial infection, or a certain condition such as disorder involving peripheral arteries and veins. Lesions are deep and irregular in shape that may bleed and leave a scar. Pressure sores or dicubitus ulcer, chancres and stasis ulcer are examples.
Lesions appear keratinized skin tissue and shedding flakes of greasy, and white, gray, or silver in color. Dry skin, psoriasis, dandruff and eczema are the examples. This lesion is produce by psoriasis, fungal infection and seborrheic dermatitis.
It is a collection of dry blood, pus or serum on the skin surface which can be orange, yellow and red-brown in color. This is also called scabs, large crusts that adhere to surface of the skin. Eczema, herpes and impetigo are examples.
It is wearing away of the superficial epidermis causing a moist, shallow area depression. The lesions heal without scarring because the erosion does not extend to the dermis. Ruptured vesicles, and scratch marks are examples.
A hollow, crusted or linear erosion area that usually induced by scratching.
Flat fibrous tissue that is permanently replace by a normal skin after an injury or trauma. A new scar may be purple or red in color, older scar may be white brown or sliver in color. Headled acne and surgical wound injury are examples.
It is a very thick, raised and irregular scar. The darkened area is caused by excessive collagen formation during healing. Keloid from piercing and surgery are the examples.
The lesion is rough, thickened epidermis resulting from injury irritation such as rubbing or scratching. Chronic Dermatitis is example.
Lesion appears dry, translucent, thin, sometimes wrinkled surface resulting from wasting of the skin due to collagen loss and elastin. It is normally seen in patients who are using topical corticosteroid medication.
Lesion appears linear crack with edges that extending into the lower portion of the skin or dermis. Athlete’s foot and cracks at the mouth or in the hand are examples.
Related article: Types of Secondary Skin Lesions