Symptoms of jellyfish stings include:  Burning, prickling, stinging pain Welts or tracks on the skin — a "print" of the tentacles' contact with the skin Itchiness (pruritus) Swelling Throbbing pain that radiates up a leg or an arm  Severe jellyfish stings can affect multiple body systems. These reactions may appear rapidly or several hours after the stings. Symptoms of severe jellyfish stings include:  Stomach pain, nausea and vomiting Headache Muscle pain or spasms Faintness, dizziness or confusion Difficulty breathing Heart problems  The severity of a reaction depends on:  The type and size of the jellyfish The age, size and health of the person affected, with severe reactions more likely in children How long the person was exposed to the stingers How much of the skin is affected 
symptoms jellyfish stings include:  burning  prickling  stinging pain welts tracks skin — "print" tentacles' contact skin itchiness (pruritus) swelling throbbing pain radiates leg arm  severe jellyfish stings can affect multiple body systems  reactions may rapidly hours stings  symptoms severe jellyfish stings include:  stomach pain  nausea vomiting headache muscle pain spasms faintness  dizziness confusion difficulty breathing heart problems  severity reaction depends on:  type size jellyfish age  size health person affected  severe reactions likely children long person exposed stingers skin affected 
jellyfish stings