Ecthyma contagiosum

Last Updated: 2020-11-19

Author(s): -

Contagious pustular dermatitis, infectious labial dermatitis, ecthyma contagiosum, thistle disease and scabby mouth

Zoonosis caused by parapoxvirus ovis, a DNA block virus, with low contagiosity.

  • A common disease among sheep farmers.
  • Self-limiting, but frequent recurrences (immunity to infection).
  • Incubation period: 3-11 days
  • Infection occurs through injured skin through direct contact with sheep, lambs and goats. Ecthyma contagiosum occurs especially in spring.
  • Usually on finger extension sides (rarely on the face).
  • Week 1: Maculopapular stage.
  • Week 2: Cockade stage.
  • Week 3: Exudation.
  • Week 4: Formation of a crust.
  • Week 5: Papillomatous transformation, then regression.
  • Generalization very rare. In addition, regional lymphadenopathy is common.

Medical history, clinic, dermatopathology, virus detection.

Vascular granulation tissue with epidermal ballooned cells and reticular degeneration.

Healing after approx. 5 weeks without scar formation.

  • Local drying and antiseptic
  • e.g.:

     

  • Iodine-povidone (Betadine®-Lsg.)
  • Allow to act for 2-3 minutes.
  • CI: Hyperthyroidism, M. Duhring, in the context of radioiodine therapy.

    According to specialist information, pregnancy and lactation are also contraindications. In the opinion of the attending physician, it will be used here anyway at best.

     

  • Tanning agents (Tannosynth®) several times a day
  1. Friederichs S, Krebs S, Blum H, et al. Comparative and retrospective molecular analysis of Parapoxvirus (PPV) isolates. Virus Res 2014;181:11-21.
  2. Bodilsen J, Leth S. [Orf parapoxvirus can infect humans after relevant exposure]. Ugeskr Laeger 2013;175:1121-2.
  3. Zhang K, Liu Y, Kong H, Shang Y, Liu X. Human infection with ORF virus from goats in China, 2012. Vector Borne Zoonotic Dis 2014;14:365-7.
  4. de Vicq de Cumptich M, Snoeck R, Sass U, del Marmol V, Binet H. [Orf nodules and immunosuppression: a case report and review of therapeutics]. Rev Med Brux 2015;36:439-43.
  5. Frandsen J, Enslow M, Bowen AR. Orf parapoxvirus infection from a cat scratch. Dermatol Online J 2011;17:9.
  6. Turan E, Yesilova Y, Ucmak D. A case of orf (ecthyma contagiosum) with multiple lesions. J Pak Med Assoc 2013;63:786-7.
  7. Friebel TR, van der Werff JF. The orf virus: a case report. J Hand Surg Eur Vol 2015;40:648-9.