Seabather's eruption
Background
- Cnidaria larvae get trapped, release toxin
- Nematocysts of the larval forms of sea anemones: Edwardsiella lineata
- Thimble jellyfish: Linuche unguiculata
- Not be confused with cercarial dermatitis, which is caused by freshwater schistosomes or coastal water clam diggers
Clinical Features
Excoriated papules in areas covered by swimsuit. Box shows Linuche unguiculata, the thimble jellyfish, whose larvae and adult forms caused this dermatitis.
- Rash generally under the garments worn by bathers and swimmers (where the organisms are trapped after the person leaves the water)
- Versus Cercarial dermatitis, which is occurs on the exposed skin outside of close-fitting garments
Differential Diagnosis
Marine toxins, envenomations, and bites
- Toxins
- Stingers
- Venomous fish (catfish, zebrafish, scorpion fish, stonefish)
- Nematocysts
- Coral reef
- Fire coral
- Jellyfish (Cnidaria)
- Portuguese man-of-war
- Sea anemones
- Seabather's eruption
- Phylum porifera (sponges)
- Bites
- Infections
- Vibrio species in saltwater
- Aeromonas species in freshwater
Travel-related skin conditions
- Papules
- Insect bites
- Scabies
- Seabather's eruption
- Cercarial dermatitis (Swimmer's Itch)
- Sub Q Swelling and Nodules
- Myiasis
- Tungiasis
- Loa loa
- African Trypanosomiasis
- Onchocerciasis
- Ulcers
- Tropical pyoderma
- Leishmaniasis
- Mycobacterium marinum
- Buruli ulcer
- Dracunculiasis (Guinea Worm disease)
- Linear and Migratory Lesions
- Cutaneous larvae migrans
- Photodermatitis
See also domestic U.S. ectoparasites
Evaluation
- Typically a clinical diagnosis
See Also
References
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