Allergic reactions to insect stings can be serious
Allergic reactions to insect stings are a common and often serious medical problem. Insects that sting are divided into two major subgroups.
There is: the group consisting of the yellow jacket, hornet and wasp, and the one made up of the more docile honeybee and bumblebee. The fire ant is a non-winged member of the first group and is responsible for an increasing number of allergic reactions.
“Reactions to stings are divided into two major categories, local and systemic," said Dr. William M. McKell, a resident of Ridgeland. "The usual and expected reaction is one of localized pain, swelling and redness at the site.
“The first step in management is to remove any retained stinger. Bees have a multi-barbed stinger which, along with the venom gland, remains attached to the victim. This needs to be scraped away from the skin with a sharp object such as a fingernail or a knife blade (do not grasp the stinger for this may inject additional venom). Essentially no treatment is required for this self-limited reaction other than possibly cold compresses and over the counter pain medication. Some advocate the application of moist tobacco or meat tenderizer (papain), and they may well be of benefit, however, I have never seen data supporting or refuting their use."
A large local reaction, such as swelling of the entire arm secondary to a sting on the hand, consists of more discomfort and prolonged swelling. These may well last a week. McKell says management here usually consists of over the counter pain medication and antihistamines if the swelling is extensive and disabling, oral cortisone-type drugs may be of benefit. He went on to indicate that it is unknown why such reactions occur, but in persons that develop them, they are more likely to have such reactions in the future.
“A severe and sometimes fatal systemic reaction is called anaphylaxis," McKell said. "It will usually begin within 20 to 30 minutes of the sting and consist of generalized hives and swelling, difficulty breathing and/or circulatory collapse and shock. This is a true medical emergency resulting in 40 to 150 deaths per year in the United States, requiring immediate professional attention."
The fire ant will bite anything that invades his bed, hold on with his jaws and rotate his body, inflicting multiple stings, typically in a circular pattern.
“These appear infected, but are not," McKell said. "I include this only to discourage the routine use of antibiotics for such a sting."
Individuals who have had a systemic reaction should consider evaluation by an allergist. Adults who have experienced this have a 30 to 60 percent risk of having another systemic reaction if stung again.
James L. Cummins is executive director of Wildlife Mississippi, a non-profit, conservation organization founded to conserve, restore and enhance fish, wildlife and plant resources throughout Mississippi. Their website is www.wildlifemiss.org. The opinions in this column are Cummins' and do not necessarily reflect the views of The Starkville Daily News or its staff.