As nouns the difference between macule and papule is that macule is a spot while papule is a small, inflammatory, irritated spot on skin. 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 telangiectasis milium. A macule is a distinct discoloration of the skin that is flat and smaller than 1 centimeter in diameter. Figure 1 a macule showing a nonpalpable flat area of color change. Without knowing exactly what you have it is very difficult to know the actual frequency, but numerous individuals present with rashes of differing nature. How to tell if a macule is skin cancer verywell health. The dermatology community has a bit of a split on this issue 0. It can be brown, purple, pink or red in color, and can cluster into a papular rash. If it is macular, you cannot feel the involved area.
The lesion is typically a solitary, wellcircumscribed, oval or linear waxy plaque that is yellow to tan in color. Examples include freckles, flat moles, tattoos, and portwine stains, and the rashes of rickettsial infections, rubella, measles can also. It is usually present at birth, but can appear later. Description of skin lesions dermatologic disorders.
Solid lesions can be described as either a papule, plaque, nodule, or wheal. Fundamentals of dermatology describing rashes and lesions. A circumscribed change in the color of skin that is neither raised nor depressed. Macules are completely flat and can only be appreciated by visual inspection and not by touch. Definition chv a patch of skin that is discolored but not usually elevated. As a verb macule is printing to blur or be blurred.
These can result from edema wheals, coalescence of adjacent papules, or be of neoplastic origin. Description of skin lesions dermatologic disorders merck. Papules may open when scratched and become infected and crusty. Secondary lesion modification of a primary lesion that results from evolution of the. A papule is small skin lesion, usually less than one centimeter in diameter. Primary lesions macule patch papule plaque nodule tumor vesicle bulla pustule cyst. Fundamentals of dermatology describing rashes and lesions camls. Aug 20, 2019 a papule is a raised area of skin tissue thats less than 1 centimeter around. A macule that is greater than 1cm in diameter is technically called a patch. Primary lesions include the macule, papule, patch, plaque, vesicle, bulla, nodule, tumor, wheal, and pustule.
The elevation may be accounted for by metabolic deposits, infiltrates, or hyperplasia of. In some cases, such as with vitiligo or rosacea, the telltale appearance is enough to make the diagnosis although further tests may be performed to identify any underlying causes. A patch is an extension of a macule in length and width. Secondary skin lesions are a progression of primary skin lesions. In other cases, the doctor may perform a culture if the. Large macule 1 cm, also used to describe large macule with scale. That is, with your eyes closed, you cannot discern a boundary to the lesional area. These are not specific to one disease, and are not always considered to be a primary lesion.
Description of skin lesions and dermatologic disorders learn about from the merck manuals medical professional version. Primary lesion a lesion directly associated with the disease process that is described with established dermatological terminology. Plaque flat, elevated lesion, usually greater than 1 cm. Macules often require no treatment, but laser surgery, cryosurgery, and regular surgical excision of the macule can be. Started in 1995, this collection now contains 6769 interlinked topic pages divided into a tree of 31 specialty books and 732 chapters.
Macule, papule, patch, plaque, vesicle, bulla, and others. Identifying the primary lesions, whenever possible, is the first step towards identification of the disease or cutaneous process. Evaluation of eyelid lesions central lakes medical. A discrete, solid, elevated body usually less than or equal to 0. Patches may have some subtle surface change, such as a fine scale or wrinkling, but although the consistency of the surface is changed, the lesion itself is not palpable. It can appear in a variety of shapes, colors, and sizes. Flat lesion plaque like lesion resulting from abnormal healing and.
Papule and plaque a papule is a circumscribed, solid elevation of skin with no visible fluid, varying in area from a pinhead to 1 cm. According to rdh magazine, this common oral condition is present in 3 percent of the general population and is caused by a. This dark area could be a melanotic macule, which is a noncancerous dark patch on the skin called hyperpigmentation of a mucous membrane. Macule definition chv a patch of skin that is discolored but not usually elevated.
A plaque is an elevation of the skin that is usually flat and wider than it is tall. Define macule patch papule plaque nodule cyst vesicle bullae pustule lichenification erythema purpura categories. A primary lesion is a change in the skin that is caused by a certain disease or infection. Size can be from a few millimeters to several centimeters. Papule is a solid, elevated lesion with no visible fluid which may be up to. They are changes to the original lesion that result from a natural evolution of the lesion or a person scratching or aggravating the lesion. Sep 14, 2015 this feature is not available right now. A patch is a large macule equal to or greater than either 5 or 10 mm across, depending on ones definition of a macule.
There are several different types, including the macule, papule, vesicle, plaque, bulla, patch, tumor, wheal, nodule, and pustule. Apr 24, 2015 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. Macules are flat, nonpalpable lesions usually patch is a large macule. If the lesion is flat, then it will be either a macule or patch. The affected area becomes discolored, and the papule is often slightly raised from the surrounding skin. Examples include freckles, flat moles, tattoos, and portwine stains, and the rashes of rickettsial infections, rubella, measles can also have papules. These are not specific to one disease, and are not always considered to. Pustules are well circumscribed elevations of the superficial layers of the epidermis. Neonatal and infantile common skin lesions pediatrics. Physicians refer to flat skin spots on the skin as macules, as opposed to papules.
Macule flat lesion less than 1 cm, without elevation or depression. Nodule elevated, solid, palpable lesion 1 cm usually located primarily in the. Study w definition first quizlet does not allow the term to be a picture. Terminology of skin lesions dermatology medbullets step 23. 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. Patch a large area of colour change, with a smooth surface. Primary skin lesions lesion size characteristics macule patch 1 cm large macule papule plaque 0. Papule definition is a small solid usually conical elevation of the skin. Description of skin lesions merck manuals professional edition. 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. A plaque is a circumscribed, palpable lesion more than 1 cm in diameter.
Patch flat lesion greater than 1 cm, without elevation or depression. This is a congenital lesion that occurs primarily on the scalp and face. The elevation may be accounted for by metabolic deposits, infiltrates, or hyperplasia of cellular elements, etc. Apr 21, 2020 a primary lesion is a change in the skin that is caused by a certain disease or infection.
Rashes can have macules, patches flat spots at least 1 cm in size, papules raised skin lesions less than 1 cm in size, plaques raised skin. To determine the cause of a macule, the dermatologist will start with a physical inspection of the lesion. A papule is a raised area of skin tissue thats less than 1 centimeter around. By definition a patch is an area of color change that is 1. A flat topped, elevated area of the skin larger than 510mm, may be formed from coalescence of papules, psoriasis, seborrheic keratosis primary skin lesions. Oct 24, 2008 define macule patch papule plaque nodule cyst vesicle bullae pustule lichenification erythema purpura categories. Secondary lesion modification of a primary lesion that results from evolution of the primary lesion, traumatic injury, or other external factors. Larger nonblisterform elevated lesions may be termed nodules. Dermatology harriet lane handbook unbound medicine. Skin lesion reference guide bulla circumscribed collection of free fluid, 1 cm macule circular flat discoloration, 1cm.
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