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What Is a Drug Allergy? A drug allergy is an immune system reaction to a medication. These reactions can occur immediately or develop hours to days after taking a drug. Common Symptoms Symptoms of a drug allergy may include: Common Medications Involved Drug allergies are often associated with: Not All Reactions Are Allergies Some medication…

What Is a Food Allergy? A food allergy occurs when the immune system reacts to a specific food as if it were harmful. Even small amounts of the food can trigger a reaction. Common Symptoms Food allergy symptoms can affect multiple systems in the body and may include: Common Food Allergens The most common food…

What Are Year-Round Allergies? Year-round allergies, also known as perennial allergies, occur when symptoms persist throughout the year rather than being limited to specific seasons. Common Symptoms Symptoms may include: These symptoms can be ongoing and may vary in severity. Common Causes Year-round allergies are often triggered by indoor allergens such as: These triggers are…

What Are Seasonal Allergies? Seasonal allergies occur when the immune system reacts to airborne allergens that are present during certain times of the year, most commonly pollen. Common Symptoms Symptoms of seasonal allergies may include: Symptoms can range from mild to severe and may affect daily activities. Common Seasonal Triggers Different allergens are more common…

What Are Allergy Triggers? Allergy triggers are substances that cause the immune system to react. These reactions can lead to symptoms such as sneezing, congestion, itching, or skin irritation. Common Environmental Triggers Many allergies are caused by substances in the environment, including: These triggers can be seasonal or present year-round. Indoor vs. Outdoor Triggers Indoor…

What Is Asthma? Asthma is a chronic condition that affects the airways in the lungs, making it harder to breathe. The airways become inflamed and narrowed, which can lead to symptoms that come and go or persist over time. Common Symptoms of Asthma Asthma symptoms may include: Symptoms can vary from mild to severe and…