We do not control or have responsibility for the content of any third-party site. Stria (plural striae) are linear, atrophic, pink, purple, or white lesions of the skin and are sometimes called “stretch marks”. (NICHD) Red skin (erythema) can result from many different inflammatory or infectious diseases. The following are examples of skin lesions: Freckles are collections of brown pigment that typically occur in children, morphing into age-spots in adults. Lesions of psoriasis and granuloma annulare commonly form plaques. Plate 6 shows the definition and appearance of common primary lesions. Excoriations may be linear or focal. Plaques are palpable lesions > 10 mm in diameter that are elevated or depressed compared to the skin surface. Reticulated lesions have a lacy or networked pattern. Orange skin is most often seen in hypercarotenemia, a usually benign condition of carotene deposition after excess dietary ingestion of beta-carotene. Pustules are vesicles that contain pus. Obviously, before we discuss them, we need to know what a skin lesion is! Vesicle A small, fluid filled lesion, <0.5 cm in diameter, raised above the plane of surrounding skin. Scale is heaped-up accumulations of horny epithelium that occur in disorders such as psoriasis, seborrheic dermatitis, and fungal infections. Classic autoimmune bullous diseases include pemphigus vulgaris and bullous pemphigoid. It is accompanied by peripheral inflammatory flush. (See also Evaluation of the Dermatologic Patient andDiagnostic Tests for Skin Disorders.). To determine the cause of erosion is possible only if a full diagnostic study. Koebner phenomenon describes the development of lesions within areas of trauma (eg, caused by scratching, rubbing, or injury). There are many risk factors for PUs, which include age > 65 years, decreased mobility, and impaired sensation, among others. EXCORIATION - A skin abrasion that is usually superficial and due to scratching of the skin. Ischemic skin appears purple to gray in color. An enanthema is a lesion of the mucous membranes, such as the oral mucosa, conjunctiva and external genitalia. Black skin lesions may be melanocytic, including nevi and melanoma. Such a lesion of the skin as erosion, often bothers men, women. Vesicles are small, clear, fluid-filled blisters < 10 mm in diameter. 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. Examples include nevi, warts, lichen planus, insect bites, seborrheic keratoses, actinic keratoses, some lesions of acne, and skin cancers. Of the main factors that influence the development of PUs, which of the following contributes to PUs but is not a direct cause? Some scars become hypertrophic or thickened and raised. Pityriasis rosea and chronic dermatitis of any type may be scaly. Plaques may be flat topped or rounded. Atrophy is thinning of the skin, which may appear dry and wrinkled, resembling cigarette paper. EROSION - A shallow, moist, or crusted lesion resulting from the loss of the superficial layers of the upper epidermis only, as from friction or pressure. But nevertheless, we note that erosive lesions are mainly localized on the epithelium of the face, genitals, hands, mucous membrane of the oral cavity, and also in the area of natural folds. Thousands of new, high … Nummular lesions are circular or coin-shaped; an example is nummular eczema. This pathology can occur on any part of the body. It occurs in patients with urticaria pigmentosa or mastocytosis. 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 The skin lesions may be associated with purpura and superficial erosions of the oral mucosa. [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 . When brown spots begin to raise up, they may be benign seborrheic keratoses. Bullae are clear fluid-filled blisters > 10 mm in diameter. Translations in context of "skin erosion" in English-French from Reverso Context: Heat, moisture and sweat retention coupled with friction cause maceration, inflammation with erythema, burning and exsudation, and sometimes skin erosion. An excoriation is a linear erosion caused by scratching, rubbing, or picking. The Manual was first published in 1899 as a service to the community. Papules are elevated lesions usually < 10 mm in diameter that can be felt or palpated. Zosteriform describes lesions clustered in a dermatomal distribution similar to those of herpes zoster. Click for word document: Approach to Skin Lesions Background. Depressed Elevated Crust/Scab (dried serum, blood, or pus overlying the lesion) Scale (dry, thin or thick flakes of skin overlying the lesion) Lichenification (thickened skin with accentuation of normal skin lines) Hypertrophic Scar (within boundary of injury) Keloid Scar (extend beyond boundary of injury) Atrophic Scar (fibrotic replacement of tissue at site of injury) Ulcer (complete loss of epidermis extending into dermis or deeper; heals with scar) Erosion (partial loss of epidermis only; heals without scar) Fissure (linear slit-like cleavage of skin) Excoriation/Scratch (linear erosion induced by scratching). 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