Medscape: Less Isothiazolinone Allergy in Europe, but More in North America May Be Due to Regulatory Differences The prevalence of contact allergy triggered by a common product preservative, isothiazolinone, has decreased in Europe while it has increased in North America. The trends are likely driven by ... Less Isothiazolinone Allergy in Europe, but More in North America May Be Due to Regulatory Differences Symptoms Allergy symptoms depend on what allergen is involved.

Understanding the Context

The symptoms can affect the airways, sinuses and nasal passages, skin, and digestive system. Allergic reactions can range from mild to severe. Sometimes, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause ...

Key Insights

Treatment Allergy treatments include: Staying away from allergy triggers, also known as avoidance. Your healthcare professional helps you take steps to spot and stay away from your allergy triggers. Often, this is the most important step in preventing allergic reactions and curbing symptoms. Medicines. Depending on your allergy, medicines can help turn down your immune system's reaction and ...

Final Thoughts

Allergy medicines are available as pills, liquids, inhalers, nasal sprays, eye drops, skin creams and shots, also called injections. Many allergy medicines are available without a prescription. Here are the different types of medicine options available to treat allergies. Talk with a healthcare ... Overview Food allergy is an immune system reaction that happens soon after eating a certain food. Even a tiny amount of the allergy-causing food can trigger symptoms such as hives, swollen airways and digestive problems.

In some people, a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis. Might you have to swear off milkshakes for good? Follow the symptom clues to find out whether you possibly have a food allergy or a food intolerance.