Almost everyone is familiar with the discomfort of insect bites, especially during the summer months. For most people an insect bite does not present any alarming problems apart from a little pain and irritation, however, there is a small minority of people who suffer allergic reactions to insect bites, known as Hymenoptera and for them bites and stings can be very dangerous.
What are pet allergies?
Pet allergies affect around 10% of the UK adult population, the most common are allergies to domestic pets, especially cats and dogs. However, allergies to other animals such as horses, mice, hamsters and birds can also occur. Guinea pigs and gerbils are more popular these days as pets, and they can also cause allergic reactions in some people.Click here for more information on pet allergies
What is a normal reaction to an insect bite?
Most people who get stung will experience some pain or discomfort, the skin around the bite usually turns red and swells up. This is not dangerous and can usually be treated with a cream or spray available from the local chemist.
What are the symptoms of an allergic reaction to an insect bite?
Allergic reactions to insect bites can vary in each person and unfortunately there is no way of knowing if you are allergic to a sting, until you have been stung. There is not usually a dangerous allergic reaction after the first sting though it may still be painful. However, on subsequent stings an allergic reaction may occur, which can sometimes lead to anaphylaxis.
The first symptoms you experience will be similar to those of a normal reaction, though they could be more severe and you may develop blisters. Further symptoms of an allergic reaction to a insect bite, usually occur within 10 minutes of the sting and may include any of the following :-
If you believe you have had an allergic reaction because of an insect bite, you should consult your doctor for advice. An allergic reaction tends to get worse with each sting you get in the future. You are more at risk of a severe allergic reaction to bee or wasp stings if you are already allergic to food, pollen or other substances.
What insects do I need to look out for?
Wasp and bee stings tend to be the most painful of insect bites. Bumblebees are not very aggressive and stings from them are rare, wasps on the other hand are quite aggressive and are the most common type of sting.
What about mosquitoes and other insects?
The bites of most insects, including the mosquito, fleas, flies and bedbugs, though irritating, usually pose very little danger in the way of an allergic reaction. The mosquito feeds off your blood, but before it sucks the blood up, it injects a tiny sample of its saliva under your skin. It is the injected saliva that causes the classic symptoms of a bite: itchy, red skin. It was once thought that the mosquito could transmit the H.I.V. virus but this is not the case. However, in some countries the mosquito can transmit diseases such as malaria (for more information on malaria click here).
What treatments are available for insect bites?
Most bites from wasps, bees or other insects will not require any special treatment. However, the following will help relieve symptoms :-
All people who have a known allergic reaction to wasp and bee stings should carry a medic alert bracelet and an adrenaline injector, in case of a severe reaction as adrenaline must be administered without delay. If you have had a previous serious reaction or your doctor suspects you are at risk of one, then you should be given a pre-loaded adrenaline injection to carry. You must ensure that you always have the adrenaline kit with you and make sure you are comfortable using the one that has been prescribed to you. Adrenaline acts quickly to improve the quality of breathing, regulate the heartbeat and reduce the swelling in the face. Adrenaline treatments available may include the following:
The majority of people prefer the use of the Epipen due to the ease and the simplicity. There is no visible needle and the device has a shelf-life of 2 years compared to 9 months for the Mini-i-jet. In some cases a single dose of the Epipen may not prove enough to treat severe reactions, you should always carry two Epipens as a safety measure.
To avoid insect bites:
You should call a doctor if :
You should seek urgent medical attention if :
Allergy to pets may take years to develop and the symptoms may persist for some time even after the contact with the pet has ceased. Pet allergies may also be known as perennial allergic rhinitis as the allergic reaction can occur throughout the year, whereas seasonal allergic rhinitis (hay fever) only occurs at certain times of the year.
What is the cause of pet allergies?
One of the main pet allergen culprits is pet or animal dander – minute particles of fur and skin that animals shed all the time. The dander particles are extremely small and therefore mainly airborne, so are easily breathed in. A cat can shed 0.2 grams of dander every day and this may be found on ceilings and walls for many months after the animal has left the house. If you are moving house and have an allergy to certain animals it would be advisable to find out if the owners have a pet. Once we’ve stroked, cuddled or even been near to animals we obligingly carry the dander even further afield where it can be a risk in public places. Dander has been found in cinemas, on buses and in offices.
Animal allergens are not just found in fur and skin, some animals produce their allergens in urine or saliva which can also trigger acute allergic reactions.
An allergic reaction can occur when an animal or object containing pet allergens is touched, or when the allergen particles are breathed in.
What are the symptoms of pet allergies?
The symptoms of pet allergies are very similar to those experienced by hay fever sufferers and can include:
How are pet allergies diagnosed?
Your doctor may be able to diagnose your allergy from your symptoms and when and where your symptoms develop. Skin tests and blood tests can confirm the diagnosis. For more information on these tests read the section “How are allergies diagnosed?” on the allergies page.
How can I avoid an allergic reaction to animals?
If you are allergic to an animal then the best solution is not keeping one in the house. If this is too traumatic you could try the following:
If you allergic to cats and are visiting the house of a cat owner, ask themnot to dust, sweep or vacuum on the day you arrive.
How are pet allergies treated?
Treatment is available to minimise the symptoms, these include antihistamine tablets or syrup, which lessens the allergic reaction and relieves the hay fever like symptoms. There are also nasal sprays and eye drops available for reducing nasal inflammation and irritated eyes.