A pustule is a small collection of pus in the top layer of skin (epidermis) or beneath it in the dermis. Pustules frequently form in sweat glands or hair follicles. Pus is a mixture of inflammatory cells and liquid. Put somewhat more simply, a pustule is a little pimple full of pus.
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A circumscribed, superficial elevation of the skin, up to 1.0 cm in diameter, containing purulent material. [L. pustula]
- malignant p. SYN: cutaneous anthrax.
- spongiform p. of Kogoj an epidermal p. formed by infiltration of neutrophils into necrotic epidermis in which the cell walls persist as a spongelike network; seen in pustular psoriasis.

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pus·tule 'pəs-(.)chü(ə)l, -(.)t(y)ü(ə)l n
1) a small circumscribed elevation of the skin containing pus and having an inflamed base
2) a small often distinctively colored elevation or spot resembling a blister or pimple

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a small pus-containing blister on the skin.

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pus·tule (pusґtūl) [L. pustula] a visible collection of pus within or beneath the epidermis. pustular adj


Medical dictionary. 2011.


Look at other dictionaries:

  • pustule — [ pystyl ] n. f. • 1314; lat. pustula 1 ♦ Petite tumeur inflammatoire et purulente à la surface de la peau. ⇒ bouton. Les pustules de la variole. Pustule maligne : le charbon humain. 2 ♦ Chacune des petites vésicules ou saillies qui couvrent le… …   Encyclopédie Universelle

  • Pustule — Pus tule (?; 135), n. [L. pustula, and pusula: cf. F. pustule.] (Med.) A vesicle or an elevation of the cuticle with an inflamed base, containing pus. [1913 Webster] {Malignant pustule}. See under {Malignant}. [1913 Webster] …   The Collaborative International Dictionary of English

  • pustule — late 14c., from O.Fr. pustule (13c.), from L. pustula blister, pimple, from PIE imitative root *pu blow, swell, on notion of inflated area (Cf. Skt. pupphusah lung, Gk. physa breath, blast, wind, bubble, Lith. puciu to blow, swell, O.C.S. puchati …   Etymology dictionary

  • pustule — *abscess, boil, furuncle, carbuncle, pimple …   New Dictionary of Synonyms

  • pustule — Pustule. s. f. Petite vessie qui s esleve sur la peau. Dans la petite verole le corps est couvert de pustules. les pustules de la petite verole sont pleines d un pus qui cave la peau, qui marque la peau. il a des pustules seches. il luy est venu… …   Dictionnaire de l'Académie française

  • pustule — ► NOUN ▪ a small blister or pimple containing pus. DERIVATIVES pustular adjective. ORIGIN Latin pustula …   English terms dictionary

  • pustule — [pus′cho͞ol΄, pus′tyo͞ol΄] n. [L pustula, blister, pimple < IE base * pu , echoic of blowing out cheeks, puffing > Gr physa, breath, bubble] 1. a small elevation of the skin containing pus 2. any small elevation like a blister or pimple …   English World dictionary

  • Pustule — Infobox Disease Name = Pustule Caption = DiseasesDB = 29434 ICD10 = ICD10|L|08|9|l|00 ICD9 = ICD9|686.9 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = A pustule is a small collection of pus… …   Wikipedia

  • pustule — (pu stu l ) s. f. 1°   Terme de médecine. Petite tumeur cutanée qui suppure au sommet. •   Cette pustule [de variole, dans l inoculation] fait, dans le bras où elle est insinuée, l effet du levain dans un morceau de pâte, VOLT. Dict. phil.… …   Dictionnaire de la Langue Française d'Émile Littré

  • pustule — [14] Despite the fact that pustules contain pus, there is no etymological connection between the two words. Pustule comes via Old French pustule from Latin pustula ‘blister’. This was a derivative of a prehistoric Indo European base *pu… …   The Hutchinson dictionary of word origins

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