Allergies and intolerances
Learn more about the most important types of allergies and intolerances and what you can do in each case.
![Girl at picnic - gets short of breath after one bite of sandwich due to food allergy](/userfiles/images/allergien-und-intoleranzen/anaphylaxie/aha-allergies-intolerances-anaphylaxis-allergic-shock.jpg)
Anaphylaxis (allergic shock)
![Spray bottles with cleaning agent](/userfiles/images/allergien-und-intoleranzen/chemische-substanzen/aha-chemical-substances.jpg)
Chemical substances
Every day we come into contact with chemical substances, such as cosmetics, cleaning agents and dyes. Some can cause an allergy or irritation.
![House dust mite](/userfiles/images/allergien-und-intoleranzen/hausstaubmilben/aha-house-dust-mite-allergy.jpg)
House dust mite allergy
House dust mites can be found everywhere, both at home and at work - with health consequences for many allergy sufferers.
![Flying bees](/userfiles/images/allergien-und-intoleranzen/insekten/aha-insect-venom-allergy.jpg)
Insect venom allergies
Bee stings occur mainly in spring and summer, whereas wasps are active in late summer and autumn. Their stings can trigger life-threatening reactions in the event of an allergy. Sufferers should therefore always carry an emergency kit with them.
![Medical professional puts on a latex glove.](/userfiles/images/allergien-und-intoleranzen/latex/aha-latex-allergy.jpg)
Latex allergy
Products containing latex can produce allergic reactions and even cause a cross-reaction with certain foods.
![Blister with different medicines](/userfiles/images/allergien-und-intoleranzen/medikamente/aha-drug-allergy.jpg)
Drugs: allergies and intolerances
Although adverse drug reactions are common, they are only sometimes due to allergy or intolerance.
![Various foods that cause allergies](/userfiles/images/allergien-und-intoleranzen/nahrungsmittel/en/aha-food-allergy.jpg)
Food allergies
A food allergy is based on an immune reaction by the body to harmless vegetable or animal proteins (allergens).
![Bread roll with soft cheese](/userfiles/images/allergien-und-intoleranzen/nahrungsmittel/en/aha-food-intolerance.jpg)
Food intolerances
The term, food intolerances, covers a range of non-allergic reactions to food.
![Spring, flowering bush, woman blowing her nose](/userfiles/images/allergien-und-intoleranzen/pollen/en/aha-pollen-allergy.jpg)
Pollen allergy (hay fever)
Pollen allergy (hay fever) is a reaction to one or more types of pollen. It involves the immune system reacting to the proteins of pollen, which in themselves are harmless.
![Microscope image of mould](/userfiles/images/allergien-und-intoleranzen/schimmelpilz/aha-mould-allergy.jpg)
Mould allergy
Moulds are found all over the world, and proliferate particularly in damp environments, both outdoors and indoors.
![A young cat peeping through a window](/userfiles/images/allergien-und-intoleranzen/tiere/aha-animal-allergy.jpg)
Animal allergy
Allergies to cats, dogs, horses and rodents are common and may cause allergy symptoms throughout the year.
![Two pots with indoor plants in front of a white brick wall](/userfiles/images/allergien-und-intoleranzen/zimmerpflanzen/aha-indoor-plants.jpg)
Indoor plants
Indoor plants make us feel better. However, there are also some that are known to trigger an allergy.
![Symbolic image: someone surfing on a smartphone](/userfiles/images/allergien-und-intoleranzen/wissenswertes/aha-good-to-know.jpg)
Good to know
More information about allergy tests, allergy prevention desensitisation, complementary medicine and much more besides helps cope with allergy issues. Our focus topics are also given here.