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Jellyfish sting

Also called: Jellyfish sting

Painful, red, stinging lines on skin after contact with a jellyfish. Most stings are mild and get better with vinegar and hot water.

First aidRinse with vinegar or seawater, remove tentacles
ThenHot water soak
DangerBox jellyfish

Overview

Don't rinse with fresh water; it can release more venom.

Symptoms

Common signs:

  • Painful red lines after a jellyfish sting

Less common

  • Itching
  • Welts

When to get medical care

Call 911Trouble breathing, chest pain, or swelling of lips or throat.
Get care todaySevere pain, vomiting, or stings on face or large areas.
See a doctor soonSigns of infection.

Causes

Jellyfish venom.

Who is more likely to get it

  • Swimmers

Possible complications

Diagnosis

Usually no tests.

Treatment

Treat the sting.

Self-care

  • Rinse with vinegar or seawater
  • Pick off tentacles with tweezers or gloves
  • Soak in hot (not scalding) water for 20 to 45 minutes
  • Don't rub or use urine

Medicines

Medicines that may help:

MedicineHelps withGood to know
Pain relievers
Pain and swellingAsk first if you have kidney, stomach, or heart problems.
Anti-itch
Itch

OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.

Prevention

To prevent:

  • Heed beach warnings

Which doctor treats this

  • Urgent care or the ER can treat it first. For minor problems, your primary care provider can help.

Back to school, work, or sports

  • Most people can go to school or work. Keep the wound clean and covered.
  • Avoid pools and hot tubs until the skin heals.

Outlook

Most heal in days.

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Jellyfish sting

Sources

Last updated 2026-11-12.