Pressure-immobilization bandaging has different recommendations depending on the snake species and country. It should only be used if a trained local health authority specifically recommends it, because it can worsen tissue injury with some snake venoms. Prompt hospital treatment and antivenom when indicated are what matter most.
CDC travel guidance and
Red Cross snakebite guidance advise immobilization and avoiding harmful traditional measures.
Children are more likely to become seriously ill from dangerous scorpion species.
CDC guidance notes that severe cases may require hospital monitoring and antivenom where available.
People with previous severe reactions to insect stings should carry epinephrine and seek medical care immediately after using it.
Red Cross insect-sting guidance supports prompt stinger removal, cleaning, cold packs, and immediate epinephrine for anaphylaxis.
If this has just happened, tell me the animal, when and where it happened, the person’s age, and their current symptoms.