When stung by a large black wasp, you should pull out the stinger, disinfect the wound, apply local ice and medication.
1. Extracting the stinger: After being stung by a wasp, you should use a suitable tool to take out the stinger, and pay attention not to squeeze the affected area during the process of taking out the stinger, so as to prevent the venom from entering into the body.
2. Sterilize the wound: Since the venom of the wasp is generally weakly acidic, alkaline solution such as soap and water can be used to smear the affected area.
3. Local ice packs: After disinfecting the wound, use sterile gauze wrapped in ice to apply ice to the affected area, which can relieve the swelling and pain of the affected area, and also slow down the rate of spreading of the venom.
4. Medication: If there is severe swelling or pain in the affected area, you can use salbutamol ointment to apply to the affected area.
Patients are advised to use the medication under the guidance of a doctor. When the sting is serious, seek medical attention for treatment.