Emergency Medicine Book

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Sea UrchinAka: Echinoderm Sting

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  1. See Also
    1. Marine Envenomation
    2. Neurotoxin
    3. Marine Injury
  2. Background
    1. Sea Urchins are in Echinoderm family
  3. Pathophysiology
    1. Sea urchin has spines with toxin coating
    2. Spines break-off in skin and may be nidus of infection
  4. Symptoms
    1. Pain or burning at trauma site
    2. Skin Discoloration or tattooing
      1. Resolves within 48 hours if no retained spine in skin
  5. Management
    1. Remove visible spines with forceps
    2. Retained spines: Historical method
      1. Hot wax applied to area and allowed to cool
        1. Wax should not be so hot to cause burns
      2. Remove wax with embedded spines
    3. Consider applying ammonia to dissolve retained spines
    4. Observe for signs of secondary infection
  6. References
    1. Habif (1996) Dermatology, p. 491
    2. Perkins (2004) Am Fam Physician 69(4):885

Sea Urchins (C0036488)

Definition (MSH)Somewhat flattened, globular echinoderms, having thin, brittle shells of calcareous plates. They are useful models for studying FERTILIZATION and EMBRYO DEVELOPMENT.
Definition (CSP)somewhat flattened, globular echinoderms of the class Echinoidea, having thin, brittle shells of calcareous plates.
Definition (CSP)body is spherical to flattened, without arms and enclosed in test of skeletal plates; test is pierced by podial pores and imperforate interambulacral plates.
ConceptsInvertebrate (T009)
MSHD012617
EnglishClass Echinoidea, Echinoidea, Phylum echinodermata - class echinoidea, Sea urchin, Sea Urchins
Spanishclase Echinoidea, erizo de mar
Parent ConceptsEchinodermata (C0013507), Sea Urchins (C0036488), Echinozoa (C0682500), Duplicate concept (C1274013), Superclass Cryptosyringida (C1720468)
SourcesAOD, CSP, MSH, NCBI, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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