| Pastule | |
|---|---|
 | |
| Fibrous papule of the nose | |
| Pronunciation | |
| Specialty | Dermatology[2] |
| Symptoms | Small, well-defined bump inskin[2] |
Apapule is a small, well-defined bump in theskin.[2] It may have a rounded, pointed or flat top, and may have adip.[2] It can appear with astalk, be thread-like or lookwarty.[3] It can be soft or firm and its surface may be rough or smooth.[2] Some havecrusts orscales.[2] A papule can be flesh colored, yellow, white, brown, red, blue or purplish.[4] There may be just one or many, and they may occur irregularly in different parts of the body or appear in clusters.[2] It does not contain fluid but may progress to apustule orvesicle.[2] A papule is smaller than anodule; it can be as tiny as a pinhead and is typically less than 1 cm in width, according to some sources,[2][3] and 0.5 cm according to others.[4] When merged together, it appears as a plaque.[4]
A papule's colour might indicate its cause, such as white inmilia, red ineczema,yellowish inxanthoma and black inmelanoma.[2] They may open when scratched and become infected and crusty.[5]
A papule is a small, well-defined bump in theskin.[2] It is smaller than anodule; it can be as tiny as a pinhead and is typically less than 1 cm in width, according to some sources,[2][3] and 0.5 cm according to others.[4]
A papule may have a rounded, pointed or flat top, and may have a dip.[2] It can be polygonal but is never rectangular or square.[6] It can appear with astalk, be thread-like or lookwarty.[3] Ulceration, oozing, bleeding or thin blood vessels may be present in a papule.[6] It can be soft or firm and its surface may be rough or smooth.[2] Some havecrusts orscales.[2] A papule can be flesh colored, yellow, white, brown, black, blue or purplish, or varying shades of red.[4][6] The intensity of redness might indicate how long the papule has been present.[6] There may be just one or many, and they may occur irregularly in different parts of the body or appear in clusters.[2] It may progress to a pustule or vesicle.[2]
Angiofibromas are papules, types of which include the usually solitaryfibrous papule of the nose andperiungual angiofibroma, and multiple inpearly penile papules, and thefacial angiofibromas as may be seen intuberous sclerosis.[7]
Papules with scale on the palms and soles may occur insecondary syphilis,psoriasis,eczema,tinea manuum,mycosis fungoides.[6] Inlichen planus papules may be itchy, flat-topped, polygonal, purplish with white streaks, and can be solitary, or occur in clusters or in a line.[6]