Health Encyclopedia
Jellyfish
Definition
This article describes the effects of a jellyfish sting.
Poisonous Ingredient
- jellyfish venom
Where Found
- jellyfish or Portuguese Man-of-War (Physalia species)
- jellyfish or sea-wasp (Chironex fleckeri, Chiropsalmus quadrigatus), found near the coasts of Northern Australia and the Philippines.
- related species
Symptoms
Portuguese Man-of-War:
- body as a whole
- numbness and arm or leg pain
- chest pain
- swallowing difficulty
- weakness
- muscle pain
- muscle spasms
- sweating
- eyes, ears, nose, and throat
- runny nose
- watery eyes
- skin
- red raised areas where stung
- gastrointestinal
- abdominal pain
- nausea
- heart and blood vessels
- nervous system
- headache
- body as a whole
- pain (severe)
- swelling
- respiratory
- gastrointestinal
- nausea
- vomiting
- skin
- starts to die in the area of the sting
- heart and blood vessels
- heartbeat slowed
Home Care
Portuguese Man-of-War:
Wash with salt water. Protect affected area if possible. Soak the area with a solution of vinegar and water (1/2 vinegar and 1/2 water) for about 30 minutes to remove any remaining tentacles. Rinse the area and then resoak with more 1/2 strength vinegar.
(To remove remaining tentacles, may use flour or shaving cream and scrape with a dull instrument such as a credit card.) Apply a cream containing a pain killer, an antihistamine, and a corticosteroid.
Sea-Wasp (usually found in Australian waters):
CALL FOR AN AMBULANCE. Death can occur within minutes.
Before Calling Emergency
Determine the following information:
- the patient's age, weight, and condition
- the name of the marine animal if possible
- the time stung
Poison Control
They will instruct you if it is necessary to take the patient to the hospital, and any appropriate first aid that can be administered prior to arrival.
What to Expect at the Emergency Room
Some or all of the following procedures may be performed:
- Portuguese Man-of-War
- Open and maintain airway if necessary
- Treat the symptoms
- Sea Wasp
- Give antiserum
- Treat the symptoms
Outlook (Prognosis)
Portuguese Man-of-War stings are rarely fatal. Sea-Wasp stings can be fatal in minutes.
Reviewed By: Eric Perez, M.D., Department of Emergency Medicine, St. Luke's-Roosevelt Hospital Center, New York, NY. Review provided by Verimed Healthcare Network.
