an example of a secondary lesion
This is a skin lesion caused by an allergic reaction. Hives are an example of wheals. Secondary skin lesions are the result of irritated or manipulated primary skin lesions. For example, if someone scratches a mole until it bleeds, the resulting lesion, a crust, is now a secondary skin lesion. The most common secondary skin lesions include: Papules are elevated lesions usually < 10 mm in diameter that can be felt or palpated. Examples include nevi, warts, lichen planus, insect bites, seborrheic keratoses, actinic keratoses, some lesions of acne, and skin cancers. The term maculopapular is often loosely and improperly used to describe many red skin rashes; because this term is nonspecific and easily misused, it should be avoided. The major types of secondary skin lesions are: 1  Ulcer. Lesion that involves loss of the upper portion of the skin (epidermis) and part of the lower portion (dermis). 2  Scale. A dry, horny build-up of dead skin cells that often flakes off the surface of the skin. 3  Crust. A dried collection of blood, serum, or pus.  Erosion. A primary lesion occurs as a result of a spontaneous manifestation of a pathological process - includes macules, papules, nodules, tumours, plaque, vesicles, bullae, pustules,… wheals, burrows and telangiectasia A secondary lesion occurs as a result of the evolution of a disease, or from external trauma - they may evolve from primary lesions - ... Do not confuse the term secondary lesion with secondary pyoderma. The latter term implies a bacterial infection which is complicating an underlying skin disease (common examples in dogs include allergy or demodicosis) but that secondary pyoderma may present with primary lesions such as papules and pustules. An extensive language has been developed to standardize the description of skin lesions, including. 1  Lesion type (sometimes called primary morphology) 2  Lesion configuration (sometimes called secondary morphology) 3  Texture. Distribution.  Color. The major types of primary lesions are: Macule. A small, circular, flat spot less than 2/5 in (1 cm) in diameter. The color of a macule is not the same as that of nearby skin. Macules come in a variety of shapes and are usually brown, white, or red. Examples of macules include freckles and flat moles. Definitions of Primary and Secondary Lesions. 1  Primary skin lesions are those which develop as a direct result of the disease process. Secondary lesions are those which evolve from primary lesions or develop as a consequence of the patient's activities. Treatment of skin lesions depends upon the underlying cause, what type of lesions they are, and the patient's overall health. If the cause of the lesions is an allergic reaction, removing the allergen from the patient's environment is the most effective treatment. An example of primary succession would be Hawaii. It used to be an island of bare rock, but primary succession lead it to be colonized with communities of plants and animals. …Getting more in depth: First of all, lichens had colonized the island and break the rock down into soil.
If someone scratches a mole until it bleeds, the resulting lesion, a crust, is now a secondary skin lesion.