One way of limiting the amount of venom injected from a bee sting is to remove the sting as soon as you realise you've been stung . Scrape the sting out off the skin in a quick side ways scraping motion. That will ensure you don't accidentally squeeze the venom sac and pump more venom into yourself or the victim.
The flat scraper at end of the hive tool is good whilst at the hives , but away from the hives an edge like a credit card or a coin are good , just don't press the venom sac , scrape it sideways instead .
Most folk who get a bee sting to the head or neck do swell up, usually it starts to swell with a minute or two , extending to overnight & sometimes into the next day .
Often so much that as the venom drains down the face your whole face side that's affected become a very painful balloon fixed to your head .
Your eye or eyes can end up being closed . A sting just below the nose or on the lips & chin usually sees you end up with a neck like a hippo , sometimes from just above the ears down to the collar bones or lower.
Bee stings especially bumble bee stings in the armpits are very painful so are multiple stings to the boobs/nipple areas. For these I definitely suggest you get urgent medical help if you can manage to get well away from the site of the nest /hive /swarm area .
If you are able to ,use a large towel soaked in hot water , as hot as you can get your hand in , then wring it out and place it over the area of the sting trying to make sure you have several thicknesses of the thick hot towel over the sting area one the sting is out . Keep it there for as long as you can and repeat it again if possible .
It's always a good idea take big flask of boiled hot water when working at your out apiaries , you can make the tea or coffee after you finish up there .
The heat of the hot poultice helps neutralise the bee venom , it also works for wasp sting and stings from the weaver fish when at the beach
The reactions to be venom can be very varied .. there was a thought that the people who took anti histamine as a prophylactic before or after being stung were actually putting themselves in danger by making the reaction more intense then or next time round .. I don't know what the current line of thought is .
As beekeepers get older it was suggested that the effect of the numbers of sting over their careers become cumulative. In that some of the keepers whom had been bee keeping for years & years as boy & man , till one day they had a single sting mild sting on the hand and within minutes had gone into an anaphylatic ( SP ?) shock .
Joining the BBK or a similar national bee keeping organisation other than the local ones should allow you to find out the current way of thinking /treatments from a reasonably reliable source rather than relying on the old ancient witchcraft cures & antediluvian therapies of the local be keeper down the road who is still using ideas from before the 1800's.