What can I do if I get stung?
Move from the area you were stung
Once you have been stung, you can still be stung by the same wasp more than once. Once injected with the wasps poison, "you" emit a pheromone that attracts other wasps to sting you.
Rub vinegar on the sting
(Please note: These pointers are only suggestions. Please consult a medical profesional)
This can help to relieve the pain as a sting from a wasp is Alkaline and vinegar or acid can neutralize the effects. Taking antihistamines will help with the swelling and pain.
For more information on what to do if you do get a reaction, see the link NHS- Sting treatment
Prevention is always better than the cure
Try to avoid them. In this way you can avoid the discomfort in the first place. Always be careful before cutting a hedge or delving into your loft space without first having a look around for any sort of wasp activity. If there are more than 2 or 3 wasps hanging around an area at any-one-time, inspect carefully before proceeding. If you are not sure, do not venture; better safe than sore.
Seek medical help if you are unsure.
The chance of a reaction is possible, even if you think you are immune. If an inflammation does not go away with in a day or two, seek medical guidance as to how to proceed. If you are stung in the neck or head regions, it may be wise to do so anyway.