Template:Short description {{#invoke:Hatnote|hatnote}} Template:Infobox medical condition (new) A papule is a small, well-defined bump in the skin.<ref name=Andrews2020>Template:Cite book</ref> It may have a rounded, pointed or flat top, and may have a dip.<ref name=Andrews2020/> It can appear with a stalk, be thread-like or look warty.<ref name="DermnetNZ"/> It can be soft or firm and its surface may be rough or smooth.<ref name=Andrews2020/> Some have crusts or scales.<ref name=Andrews2020/> A papule can be flesh colored, yellow, white, brown, red, blue or purplish.<ref name=Dinulos2019>Template:Cite book</ref> There may be just one or many, and they may occur irregularly in different parts of the body or appear in clusters.<ref name=Andrews2020/> It does not contain fluid but may progress to a pustule or vesicle.<ref name=Andrews2020/> A papule is smaller than a nodule; it can be as tiny as a pinhead and is typically less than 1 cm in width, according to some sources,<ref name=Andrews2020/><ref name=DermnetNZ>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> and 0.5 cm according to others.<ref name=Dinulos2019/> When merged together, it appears as a plaque.<ref name="Dinulos2019"/>
A papule's colour might indicate its cause, such as white in milia, red in eczema, yellowish in xanthoma and black in melanoma.<ref name=Andrews2020/> They may open when scratched and become infected and crusty.<ref name="dosland">Template:DorlandsDict</ref>
DefinitionEdit
A papule is a small, well-defined bump in the skin.<ref name=Andrews2020/> It is smaller than a nodule; it can be as tiny as a pinhead and is typically less than 1 cm in width, according to some sources,<ref name=Andrews2020/><ref name="DermnetNZ"/> and 0.5 cm according to others.<ref name="Dinulos2019"/>
EvaluationEdit
A papule may have a rounded, pointed or flat top, and may have a dip.<ref name=Andrews2020/> It can be polygonal but is never rectangular or square.<ref name=Allen2010>Template:Cite book</ref> It can appear with a stalk, be thread-like or look warty.<ref name=DermnetNZ/> Ulceration, oozing, bleeding or thin blood vessels may be present in a papule.<ref name=Allen2010/> It can be soft or firm and its surface may be rough or smooth.<ref name=Andrews2020/> Some have crusts or scales.<ref name=Andrews2020/> A papule can be flesh colored, yellow, white, brown, black, blue or purplish, or varying shades of red.<ref name=Dinulos2019/><ref name=Allen2010/> The intensity of redness might indicate how long the papule has been present.<ref name=Allen2010/> There may be just one or many, and they may occur irregularly in different parts of the body or appear in clusters.<ref name=Andrews2020/> It may progress to a pustule or vesicle.<ref name=Andrews2020/>
Differential diagnosisEdit
Angiofibromas are papules, types of which include the usually solitary fibrous papule of the nose and periungual angiofibroma, and multiple in pearly penile papules, and the facial angiofibromas as may be seen in tuberous sclerosis.<ref name=Paller2020>Template:Cite book</ref>
Papules with scale on the palms and soles may occur in secondary syphilis, psoriasis, eczema, tinea manuum, mycosis fungoides.<ref name=Allen2010/> In lichen planus papules may be itchy, flat-topped, polygonal, purplish with white streaks, and can be solitary, or occur in clusters or in a line.<ref name=Allen2010/>
See alsoEdit
ReferencesEdit
Template:Clinical and histological nomenclature for skin lesions