Larger nonblisterform elevated lesions may be termed nodules. The target lesion, when present, is diagnostic of erythema multiforme and is characterized by three concentric zones of color. Nodule elevated, solid, palpable lesion 1 cm usually located primarily in the dermis and subcutis. Morphology the form or structure of an individual skin lesion. Typically erythematous, but they may be hyperpigmented. Macule a small patch of skin that is altered in colour but is not elevated. Description of skin lesions dermatologic disorders merck. A patch is a large macule equal to or greater than either 5 or 10 mm across. Macule, papule, patch, plaque, vesicle, bulla, and others. The term papule is derived from latin from papula, a pimple. A wheal is essentially a papule or plaque that is characteristically evanescent. Crust scale fissure erosion ulcer excoriation scar keloid. Evaluation of eyelid lesions eyelid diseases central.
You can also find descriptions and lots more pictures of all the different lesions in chapter 1 of clinical dermatology by t. An 18yearold woman presented with a progressive appearance of firm, redbrown, asymptomatic, 1 to 3mm, domeshaped papules on the right cheek that developed over the course of 2 years. Lesions are typically elliptical with the long axis parallel to skin lines shown. A flat topped, elevated area of the skin larger than 510mm, may be formed from coalescence of papules, psoriasis, seborrheic keratosis primary skin lesions. Papules are circumscribed, solid elevations of the skin, up to 1 cm in diameter. The elevation may be due to accumulation of cells, fluid, debris or metabolic deposits and may be follicular or interfollicular in orientation. Dermatology for the nondermatologist may 30 june 3, 2018 2 fundamentals of dermatology daniel j. In urticaria, the lesion is a hive or wheal, which is defined, in chapter 3, as a papule or plaque of dermal edema, often with central pallor and an irregular, erythematous border. It is flat, and if you were to close your eyes and run your fingers over the surface of a purely macular lesion, you could not detect it. Description of skin lesions and dermatologic disorders learn about from the msd manuals medical professional version. Macule,papule, vesicle, pustule, plaque terminology of skin lesions according to morphology of lesion as shown in the table lets go in to a bit detail divided in to 4 groups 1.
Sarcoma other may initially be subtle with bruises or redpurple areas of skin change lesions become raised and ulcerate with time dermatofibrosarcoma protuberans initially a single, raised, red to bluish, firm lesion lesions grow very slowly to form irregular, protuberant swellings. Examples include freckles, flat moles, tattoos, and portwine stains, and the rashes of rickettsial infections, rubella, measles can also have papules and plaques, and some allergic drug eruptions. Solid lesions can be described as either a papule, plaque, nodule, or wheal. The cutaneous lesions on the hands, feet, and buttocks are 2mm to 10mm erythematous macules on which a central, gray, oval vesicle develops. A papule, a bulla, and a vesicle are all small, raised lesions on top of the skin. The lesions may be hotter or cooler than surrounding skin. A macule is a flat, distinct, discolored area of skin less than 1 centimeter cm wide. Description of skin lesions dermatologic disorders. To differentiate these skin lesions from each other, here are the pictures of each. The word macule comes from the latin macula meaning a.
Macsweens morphologic manifestations of cutaneous disease and my lecture assessment of patients with a skin disorder. If you were to close your eyes and run your finger over the skin, you generally would not be able to feel any change in texture. A patch is an extension of a macule in length and width. It doesnt involve any change in the thickness or texture of the skin. Papule is a solid, elevated lesion with no visible fluid which may be up to.
Papules can be brown, purple, pink or red in color, and can cluster into a papular rash. It is a brown macule with some color variation, spreading slowly and unevenly at the edges. Fibrous papule of the face is a common, benign, discrete, firm, domeshaped, shiny, skin colored to pink papule, which represents an angiofibroma. A macule is a distinct discoloration of the skin that is flat and smaller than 1 centimeter in diameter. That is, with your eyes closed, you cannot discern a boundary to the lesional area. A pustule is a circumscribed elevation of the skin that contains a purulent exudate. Labial melanotic macule is a welldefined, oval, brown to black, flat patch on the central third of. A plaque is an elevation of the skin that is usually flat and wider than it is tall.
The skin surface is neither elevated or depressed in relation to the surrounding skin. A pigmented macule is a patch of brown, yellow, blue or other color. A nodule is a solid lesion with a deeper cutaneous involvement. Candida itching and soreness erythema, satellite lesions, white patches molluscum contagiosum clusters of 25 mm shiny papules with an umbilicated centre scabetic nodules itchy papules and nodules most commonly seen in the groins and axillae, lesions on the shaft of the penis are pathognomonic nodules may persist for several weeks.
Study w definition first quizlet does not allow the term to be a picture. This quiz will take you through most of the terminology described in dr. The name is a blend of the words macule, which are flat discolored skin lesions, and papule, which are small raised. Nodules are forms of papules, but are larger and deeper. It can appear in a variety of shapes, colors, and sizes. Skin lesion reference guide bulla circumscribed collection of free fluid, 1 cm macule circular flat discoloration, lesion, 1cm.
If the lesion is flat, then it will be either a macule or patch. Most lesions are located on the nose and, less commonly, on the cheeks, chin, neck, and, rarely, on the lip or forehead. Secondary skin lesions are a progression of primary skin lesions. Vesicles, bullae, and pustules are formed by fluid within skin layers.
Macules are circumscribed alterations in skin color. Proliferation of melanocytes may result in congenital or acquired benign melanocytic naevi. Description of skin lesions and dermatologic disorders learn about from the merck manuals medical professional version. A papule is a raised area of skin tissue thats less than 1 centimeter around. A macule is a change in surface color, without elevation or depression and, therefore. Ecchymosis plural ecchymoses nonblanching, purpuric macules or patches greater than 3 mm in diameter due to extravasated blood in the skin. Macules areas of discoloration of the skin, less than 1 cm in diameter. Dermatologists call any small solid circumscribed bump in the skin a papule, as opposed to a vesicle which contains fluid or a macule which is flat and even with the surrounding skin. Patches are generally larger than one cm, while a macule is typically smaller than one cm. A papule is a circumscribed, solid elevation of skin with no visible fluid.
Primary skin lesions macule patch papule plaque nodule vesicle bulla pustule abscess wheal cyst. Fundamentals of dermatology describing rashes and lesions. Dermatologists call small flat skin spots on the skin macules, as opposed to papules which are small solid bumps that rise up above the surrounding skin and vesicles which are small blisters that contain fluid before they burst. It can be brown, purple, pink or red in color, and can cluster into a papular rash. Maculopapular rash may be mistakenly called macule, papule, patch, nodule, plaque, vesicle, or pustule. The oral lesions are usually 23 mm vesicles on an erythematous base.
Labial melanotic macule or oral melanotic macule causes. A macule is a circumscribed discoloration without elevation or depression that may be hypopigmented or pigmented in a range of colors. A papule is a circumscribed, solid elevation of skin with no visible fluid, varying in area from a pinhead to 1 cm. Macule definition chv a patch of skin that is discolored but not usually elevated. A maculopapular rash is made of both flat and raised skin lesions.
If the lesion such as a dark spot on the skin isnt raised and its less. Primary lesions macule patch papule plaque nodule tumor vesicle bulla pustule cyst secondary lesions scale crust excoriation lichenification maceration fissure erosion ulcer distinct lesions whealhive burrow comedone atrophy keloid fibrosis petechiae. Areas of discoloration that are larger than 1 cm are referred to as patches. Definition chv a patch of skin that is discolored but not usually elevated. A detailed dermatologic history can help shed light on possible causes of a skin lesion. They may open when scratched and become infected and crusty. Macules are flat, nonpalpable lesions usually macules represent a change in color and are not raised or depressed compared to the skin surface. Core concepts of pediatric dermatology functions of the skin anatomy of the. They are changes to the original lesion that result from a natural evolution of the lesion or a person scratching or aggravating the lesion. Description of skin lesions dermatologic disorders msd manual.
Papules may open when scratched and become infected and crusty. A skin lesion is a part of the skin that has an abnormal growth or appearance compared to the skin around it. Authoritative facts about the skin from dermnet new zealand. These present as persisting macules, papules, plaques and nodules.
Maculopapular rash pictures, causes, diagnosis 2020. Can you recognize benign skin lesions from cancerous ones. Primary skin lesions are abnormal skin conditions present at birth or acquired over a persons lifetime. Palpation is an easy way to classify these lesions. A macule is a discolored patch of skin that is not elevated and is less than one centimeter in diameter. Figure 3 shows conjoining erythematous macules in a dog with hyperadrenocorticism. Dermatology harriet lane handbook unbound medicine. Patch a large area of colour change, with a smooth surface. Macule patch papule plaque nodule tumor wheal urticaria vesicle bulla pustule cyst. Terminology of skin lesions dermatology medbullets. Nodules, tumors, papules, wheals, and plaques are palpable, elevated, solid masses. Color changes over time may go from blueblack to brownyellow, or green before fading away. Hair pull test hand dermatitis koebner phenomenon macule melanocyte neonatal pustules and vessicles nikolskys sign nodule papule pathergy plaque pustule scalp dermatitis skin lesion solid skin colored skin lesion solid white skin lesion solid.
Neonatal and infantile common skin lesions pediatrics. Macule, patch, papule, plaque, nodule, tumor, vesicle, bulla, pustule, wheal. A patch is a primary lesion that is similar to the macule, but takes up a bigger area of the skin. The clinical presentation of infantile acne is typically more severe than that of neonatal acne and consists of typical acneiform lesions including inflammatory papules, comedones, pustules, with occasional nodules in the face. Some macules are slightly depressed below the surface of the skin. Macule is patch of skin that is altered in color but is not elevated.