Psorosperm

Psorosperm (from the Greek ψωρα itch and σπερμα seed) is a name formerly given to a number of parasitic protozoa which produce cystlike or sporelike structures in the tissue of hosts, but now essentially obsolete.

The term was introduced in German (as Psorospermien) by J. Müller in 1841.[2][3]

Psorosperm was at one point believed to be the cause of Darier's disease.[4][5]

"Psorospermiasis" is classified under 136.4 in ICD-9.[6]

References

  1. Ragan MA, Goggin CL, Cawthorn RJ, et al. (October 1996). "A novel clade of protistan parasites near the animal-fungal divergence". Proc. Natl. Acad. Sci. U.S.A. 93 (21): 11907–12. doi:10.1073/pnas.93.21.11907. PMC 38157Freely accessible. PMID 8876236.
  2. Müller J. 1841: Über Psorospermien. Arch. Anat. Physiol. Wissensch. Med. 5: 477–496
  3. Revere Randolph Gurley (1894). The Myxosporidia, or Psorosperms of fishes: and the epidemics produced by them. Govt. print. off. p. 72. Retrieved 10 April 2010.
  4. "Arch Derm Syphilol -- Excerpt: KERATOSIS FOLLICULARIS (DARIER'S DISEASE) A VITAMIN A DEFICIENCY DISEASE, February 1941, PECK et al. 43 (2): 223".
  5. F. J. Darier. De la psorospermose folliculaire végétante. Étude anatomo-pathologique d'une affection cutanée non décrite ou comprise dans le groupe des acnés sebacées, cornées, hypertrophiantes, des kératoses (ichtyoses) folliculaires, etc. Annales de dermatologie et de syphilographie, Paris, 1889, 10: 597-612.
  6. "2009 ICD-9-CM Diagnosis Code 136.4 : Psorospermiasis".
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