Full thickness sores are ulcers. Examples: impetigo, acne. Petechiae are nonblanchable punctate foci of hemorrhage. Causes include platelet abnormalities (eg, thrombocytopenia, platelet dysfunction), vasculitis, and infections (eg, meningococcemia, Rocky Mountain spotted fever, other rickettsioses). Circumscribed and elevated. Secondary lesions of herpes zoster. Macule. Red skin (erythema) can result from many different inflammatory or infectious diseases. of skin lesion images obtained with standard cameras are presented. Some scars become hypertrophic or thickened and raised. An excoriation is a linear erosion caused by scratching, rubbing, or picking. Fluid is often visible and the lesions are translucent 24. Scars are areas of fibrosis that replace normal skin after injury. EXCORIATION - A skin abrasion that is usually superficial and due to scratching of the skin. Your skin is not only your largest organ but is also an integral component of the body’s defence system. An aphtha is a painful, sharply circumscribed, round erosion with a diameter of 1 cm or less in the mucous membrane (Fig. Induration is characteristic of panniculitis, some skin infections, and cutaneous metastatic cancers. Papules are elevated lesions usually < 10 mm in diameter that can be felt or palpated. Rash is a general term for a temporary skin eruption. Configuration of the lesion(s) Assess the configuration of the lesion(s).. Configuration refers to the shape or outline of skin lesions. Auspitz sign is the appearance of pinpoint bleeding after scale is removed from plaques in psoriasis. We do not control or have responsibility for the content of any third-party site. Atrophy is thinning of the skin, which may appear dry and wrinkled, resembling cigarette paper. Last full review/revision Feb 2019| Content last modified Feb 2019, © 2020 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA), © 2021 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA, Cross-section of the skin and skin structures, Musculoskeletal and Connective Tissue Disorders. Atrophy may be caused by chronic sun exposure, aging, and some inflammatory and neoplastic skin diseases, including cutaneous T-cell lymphoma and lupus erythematosus. Vesicle A small, fluid filled lesion, <0.5 cm in diameter, raised above the plane of surrounding skin. Herpetiform describes grouped papules or vesicles arranged like those of a herpes simplex infection. Crusting can occur in inflammatory or infectious skin diseases (eg, impetigo). The trusted provider of medical information since 1899, Lesion Configuration (Secondary Morphology). To do that, you need to know how to describe a lesion with the associated language. Insect … It occurs in patients with urticaria pigmentosa or mastocytosis. Hidradenitis suppurativa involves skin containing a high density of apocrine glands, including the axillae, groin, and under the breasts. Erosion: An erosion is a discontinuity of the skin exhibiting incomplete loss of the epidermis, a lesion that is moist, circumscribed, and usually depressed. Nikolsky sign is epidermal shearing that occurs with gentle lateral pressure on seemingly uninvolved skin in patients with toxic epidermal necrolysis and some autoimmune bullous diseases. [21] [33] Excoriation : a punctate or linear abrasion produced by mechanical means (often scratching), usually involving only the epidermis, but commonly reaching the papillary dermis . About the signs and symptoms of skin erosion, its causes of appearance and methods of treatment in … Causes include venous stasis dermatitis, physical trauma with or without vascular compromise (eg, caused by decubitus ulcers or peripheral arterial disease), infections, and vasculitis. Obviously, before we discuss them, we need to know what a skin lesion is! MORPHOLOGY OF SKIN LESIONS: Secondary Skin Lesions Skin Lesion Secondary Skin Lesion Lesion that develops from trauma, manipulation (rubbing, scratching), complication (infection) of initial lesion, or develops naturally over time Primary Skin Lesion Initial lesion not altered by trauma, manipulation (rubbing, scratching), complication (infection), or natural regression over time. The term maculopapular is often loosely and improperly used to describe many red rashes; because this term is nonspecific and easily misused, it should be avoided. Examples include nevi, warts, lichen planus, insect bites, seborrheic keratoses, actinic keratoses, some lesions of acne, and skin cancers. Now on sale in the Medical Bookstore. Such a lesion of the skin as erosion, often bothers men, women. Vascular lesions or tumors, such as Kaposi sarcoma and hemangiomas, can appear purple. Excoriations may be linear or focal. Psoriasis frequently exhibits this phenomenon, as may lichen planus, often resulting in linear lesions. Umbilicated lesions have a central indentation and are usually viral. An extensive language has been developed to standardize the description of skin lesions, including, Lesion type (sometimes called primary morphology), Lesion configuration (sometimes called secondary morphology). When brown spots begin to raise up, they may be benign seborrheic keratoses. This language, reviewed here, can be used to describe any skin finding. Linear lesions take on the shape of a straight line and are suggestive of some forms of contact dermatitis, linear epidermal nevi, and lichen striatus. Each type of injury creates a complex set of skin responses, such as erythema, macules, papules, pustules, vesicles/bullae, erosion, and ulcers. Target (bull’s-eye or iris) lesions appear as rings with central duskiness and are classic for erythema multiforme. Examples include molluscum contagiosum and herpes simplex. Lichenification is thickening of the skin with accentuation of normal skin markings; it results from repeated scratching or rubbing. Of the main factors that influence the development of PUs, which of the following contributes to PUs but is not a direct cause? Existing feature sets have defined many low-level ... where A B and A B are morphological erosion and dilation, defined as: A B = \ b2B A b (3) A B = [b2B A b (4) where A ... this example, fB 1 = 0:0910 Thus the points of the shape border are transformed into Wheals are a common manifestation of hypersensitivity to drugs, stings or bites, autoimmunity, and, less commonly, physical stimuli including temperature, pressure, and sunlight. Classic autoimmune bullous diseases include pemphigus vulgaris and bullous pemphigoid. Palpable purpura is considered the hallmark of leukocytoclastic vasculitis. The legacy of this great resource continues as the Merck Manual in the US and Canada and the MSD Manual in the remainder of the world. HA Integumentary Physical Exam 67 Terms. Disease or impairment of the skin’s normal function can lead to significant morbidity and mortality 1.. To determine the cause of erosion is possible only if a full diagnostic study. Configuration is the shape of single lesions and the arrangement of clusters of lesions. Vitiligo may be patchy and isolated or may group around the distal extremities and face, particularly around the eyes and mouth. Black eschars are collections of dead skin that can arise from infarction, which may be caused by infection (eg, anthrax, angioinvasive fungi including Rhizopus, meningococcemia), calciphylaxis, arterial insufficiency, or vasculitis. Are ulcers primary or secondary. Shades of blue, silver, and gray can result from deposition of drugs or metals in the skin, including minocycline, amiodarone, and silver (argyria). Secondary lesions, on the other … Green fingernails suggest Pseudomonas aeruginosa infection. Park YS, Kang JH, Kim HY, Kang DW, Chang WS, Kim JP, Chang JW Stereotact Funct Neurosurg 2011;89(3):178-84. Xanthomas, which are yellowish, waxy lesions, may be idiopathic or may occur in patients who have lipid disorders. Furthermore, skin lesions can be broken down into two major groups: primary and secondary. Large areas of purpura may be called ecchymoses or, colloquially, bruises. The link you have selected will take you to a third-party website. Examples include warts and seborrheic keratoses. Other examples of vesicle Impetigo Insect bite Herpes simplex Dermatitis herpetiformis 26. Distribution is random or patterned, symmetric or asymmetric. It is accompanied by peripheral inflammatory flush. A disorder characterized by circumscribed, inflammatory and necrotic erosive lesion on the skin. MORPHOLOGY OF SKIN LESIONS: Secondary Skin Lesions Skin Lesion Secondary Skin Lesion Lesion that develops from trauma, manipulation (rubbing, scratching), complication (infection) of initial lesion, or develops naturally over time Primary Skin Lesion Initial lesion not altered by trauma, manipulation (rubbing, scratching), complication (infection), or natural regression over time. 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