Yes, taking a hot shower (or soaking the area in hot water, around 104-113°F or 40-45°C) for 20-45 minutes is a highly recommended treatment for jellyfish stings to help denature the venom and relieve pain, but only after rinsing with seawater (not fresh water) and carefully removing any visible tentacles first, to avoid triggering more stings. Hot water is generally better than ice for many stings, but ensure the water isn't scalding to prevent burns.
Once tentacles are removed, place the exposed limb or body region in hot water (immersion is best, shower is acceptable). It is recommended that the water be “as hot as can be tolerated” for 20 minutes. Hot water is used to deactivate the proteins in the jellyfish venom.
Soak the skin in hot water. Use water that's 110 to 113 F (43 to 45 C). It should feel hot, not scalding. Keep the affected skin immersed or in a hot shower until the pain eases, which might be 20 to 45 minutes.
Do not rinse with fresh water (like tap or bottled water) because that can make more stingers fire. Rinsing a sting with seawater may prevent stingers from releasing more venom. Also, do not scrape off any stingers still in the skin. This used to be recommended, but now is thought to make stings worse.
Forget weird remedies such as hot sand, kerosene, or urine, and don't douse the sting with fresh water—it forces toxins further into the skin. Dilute vinegar is good first aid for box jellyfish and Portuguese man-of-war stings, and ice is best for the rest.
Minor stings: Severe burning pain will lessen within 1-2 hours. Red blotches and lines often improve in 24 hours. Red lines may last 1-2 weeks. More severe stings: Blisters appear within 6 hours.
As well as dousing jellyfish stings with vinegar or hot water, the new EMS policy says lifeguards should scrape venom sacs from the skin. Clark said if lifeguards aren't in sight, beachgoers could remove the sacs in a pinch, as long as they're careful.
Urine is actually water-based, so it doesn't contain enough ammonia to deactivate the toxin. In other words, pee will not help the pain. It's unsanitary and can make the pain worse, because pressure from the urination can cause the barbs to release more toxins.
Most jellyfish stings are harmless. But some jellyfish stings can cause serious harm. If you, or someone you're with, are stung, get help right away. If you're experiencing life-threatening symptoms such as difficulty breathing, call 911 or go to your nearest emergency room.
Symptoms of severe jellyfish stings include:
Heat Therapy if Initial Pain is Severe:
Reason: hot water may break down the venom and relieve the pain. Place the painful part in a tub of hot water, if possible. For other areas, you can apply a hot washcloth. Water temperature: hot, but not above 104 F (40 C).
The effect of heat using hot water appears safe and may provide anti-inflammatory and venom denaturing effects, resulting in faster clinical improvement of symptoms.
Seek medical help right away. Get medical attention right away if pain increases or there are any signs of breathing difficulty or chest pains. As soon as possible, rinse the sting site with large amounts of household vinegar for at least 30 seconds. Vinegar is safe and effective for all types of jellyfish stings.
Heat is the key
“And if you Google it, many sites —even those considered reputable—will tell you to put ice on a sting to dull the pain. But research to date has shown that all marine venoms are highly heat sensitive, thus hot water or hot packs should be more effective than cold packs or ice.”
This is because jellyfish are about 95 percent water. Lacking brains, blood, or even hearts, jellyfish are pretty simple critters.
Irukandji jellyfish. The Irukandji jellyfish (/ˌɪrəˈkændʒi/ IRR-ə-KAN-jee) are any of several similar, extremely venomous species of rare box jellyfish. With a very small adult size of about a cubic centimetre (1 cm3 or 0.061 in3), they are both one of the smallest and one of the most venomous jellyfish in the world.
It's extremely painful, but in most cases, doesn't require a visit to the emergency room! If left untreated the symptoms generally resolve within one to two weeks. Dis- coloration of the skin may last one to two months. Although jellyfish stings can be quite painful, most are minor and get better with home treatment.
As soon as the jellyfish is dropped on the beach by the retreating tide, the jellyfish begins to die. A jellyfish breathes by taking in oxygen from the seawater through its skin so as soon as it is on dry land it can no longer live.
When an itchy rash occurs several days to weeks after a sting, the rash may mean a delayed skin reaction has occurred. A delayed reaction can occur many times over the course of 1 to 2 months following a sting. You may have a fever, weakness, or joint stiffness or swelling.
Gently wash the area with soap and water. Apply to the affected skin a cloth dampened with cold water or filled with ice. Keep it on for 10 to 20 minutes. This helps reduce pain and swelling.
A dead jellyfish still can sting, so wear sandals even on the sand. If you're stung, rinse off the affected area using either seawater or hot tap water. This will help remove the stinging cells the jellyfish can leave.
Treat itching with an over-the-counter anti-itch cream and/or an antihistamine, such as diphenhydramine (Benadryl®). If itching is severe, see a doctor for a stronger preparation. See a doctor if someone is stung in the mouth, in or near the eye, on a large area of skin, or on the genital region.
Do not apply ice: the jellyfish toxin may linger even longer. Forget grandma's remedies such as urine, alcohol, and ammonia because they may make the situation worse or spread the stinging cells over a larger area.
Others suggest wearing a waterproof moisturizer such as zinc oxide or thick layers of Vaseline to block the stings. Israeli researchers have also developed a lotion that, they say, borrows from mechanisms found in the clown fish and can prevent jellyfish stings.
raise or elevate the affected area if possible, as this can help reduce swelling. avoid scratching the area, to reduce the risk of infection. avoid traditional home remedies, such as vinegar and bicarbonate of soda, as they're unlikely to help.