jellyfish sting [L, gelare, to congeal; AS, fisc + stingan] , a wound caused by skin contact with a jellyfish, a sea animal with a bell-shaped gelatinous body and numerous suspended long tentacles containing stinging structures. ▪ OBSERVATIONS: In most cases a tender red welt develops on the affected skin. In some cases, depending on the sensitivity of the person and the species of jellyfish, severe localized pain and nausea, weakness, excessive lacrimation, nasal discharge, muscle spasm, perspiration, difficulty in swallowing, and dyspnea may occur. ▪ INTERVENTIONS: First-aid guidelines published by the American Red Cross and the American Heart Association recommend rinsing the area of the sting with vinegar. Vinegar neutralizes the venom and prevents its spread. This should be followed by soaking the affected area in warm water for 20 minutes. ▪ PATIENT CARE CONSIDERATIONS: Emergency personnel should be contacted if the person shows signs of a severe allergic reaction.
