Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn't cause a reaction in most people. Your immune system produces substances known as antibodies. When you have allergies, your immune system makes antibodies that identify a particular allergen as harmful, even though it isn't. When allergy come information contact with the allergen, your immune system's reaction can inflame your skin, sinuses, airways or digestive head. The severity of allergies varies from person to person and can range from minor irritation to anaphylaxis — a potentially life-threatening emergency. While most allergies can't be cured, treatments can help relieve your allergy symptoms. Allergy symptoms, which depend on the substance involved, can affect your airways, sinuses and nasal passages, skin, and digestive system.
Learn the signs and symptoms of mold allergy. Sinus Infection. Sinus infection is a major health problem.
Allergies: What are the Symptoms and Types?
It afflicts 31 million people in the United States. Cockroach Allergy. Learn the signs and symptoms of cockroach allergy. Types of Asthma Adult-Onset Asthma.
WebMD Allergies Health Center - Find allergy information and latest health news
Can you get asthma as an adult? What causes adult onset asthma? Read more to find out, and see an allergist allergy treatment. Allergic Asthma. Learn about the triggers and treatment for allergic asthma information how an allergist can help informmation manage allergy and asthma symptoms. How does chronic obstructive pulmonary disorder or COPD overlap with asthma? Learn the symptoms and treatment options and see an allergist for help. If you start wheezing or coughing during exercise, or if physical exertion makes it difficult for you to breathe, you may have exercise-induced asthma.
Nonallergic Asthma. Learn about the triggers and treatment for non-allergic asthma and how an head can help you manage symptoms. Occupational Asthma.
If you experience wheezing, coughing, chest tightness or shortness of breath at work, you may have occupational asthma. Recent News Menu. While some types of headaches have an allergic basis, most do not.
Before you see head allergist for evaluation and treatment of your headaches, you should first visit your primary care physician to rule out other, more common causes.
Overview Allergy Headache Sinus Headache. Allergy Headache. Sinus Headache. Management and Treatment The first approach in managing sinus headaches is to avoid the allergens that trigger them. Outdoor exposure: Stay indoors as much as possible when common triggers, such as high pollen counts, are at their peak, usually during the midmorning and early evening, and when wind is blowing pollens around.
Avoid using window fans that can draw pollens and molds into the house. Wear glasses or sunglasses when outdoors to minimize the amount of pollen getting into your eyes, as this can cause your sinuses to flare up. Indoor exposure: Keep windows closed, and information air conditioning in your car and home. Air conditioning units should be allergy clean.
Reduce exposure to dust mites, especially in the bedroom. To limit exposure to mold, keep the information in your home low between 30 allergy 50 percent and clean your bathrooms, kitchen and basement regularly. Use a dehumidifier, especially in the basement and in other damp, humid places, and empty and clean it often. If mold is visible, clean it with detergent head a 5 percent bleach solution as directed by an allergist. Clean floors with a damp rag or mop, rather than dry-dusting or sweeping.
General measures include the following:. Mayo Clinic does not endorse companies or products.
Allergies - Symptoms and causes - Mayo Clinic
Advertising revenue supports our not-for-profit mission. This imformation does not have an English version. This content does not have an Arabic version. Overview Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn't cause a reaction in most people. Request an Appointment at Mayo Clinic.
AllergyEats - The Leading Guide to Allergy Friendly Restaurants Nationwide
More Information Allergy-proof your home. Share on: Facebook Twitter. Show references Allergy overview. Asthma and Allergy Foundation of America. Accessed May 28, Allergic reactions. American Academy of Allergy, Asthma and Immunology.
Seidman MD, et al. Clinical practice guideline: Allergic rhinitis. Otolaryngology — Head and Neck Surgery. Allergies and hay fever. But informahion are a big part of processed foods, too.Allergy Headaches | Causes, Symptoms & Treatment | ACAAI Public Website
Skin Allergies Contact Dermatitis Something touches your skin, and your immune system thinks it's under attack. It overreacts and sends antibodies to help fight the invader, called an allergen. The result is a red, itchy rash where the substance landed.
All About Allergies (for Parents) - Nemours KidsHealth
Hives Urticaria and Angioedema Hives, also known head urticaria, are an outbreak of allergy, pale red bumps, patches, or welts on the skin that appear suddenly -- as a result of allergies, or for other reasons. In angioedema, the swelling happens under the skin, not on the surface. Allergies to Poison Ivy, Oak, and Sumac Poison allegy, poison oak, and poison sumac are plants that contain an irritating, oily sap called urushiol.
Urushiol triggers an allergic reaction when information comes information contact with skin, resulting in an imformation rash, which can appear within hours of exposure or up to several days head. Allergies to Insect Stings Bee, wasp, yellow jacket, hornet, or fire ant stings are the insect stings that most often trigger allergies.
Most people are not allergic to insect stings allergy may mistake a normal sting reaction for an allergic reaction. Can You Be Allergic to the Sun?Pollen is a major cause of allergies (a pollen allergy is often called hay fever or rose fever). Trees, weeds, and grasses release these tiny particles into the air to fertilize other plants. Pollen allergies are seasonal, and the type of pollen someone is allergic to determines when symptoms happen. Sneezing, difficulty breathing, cramps, and vomiting–all are allergy symptoms. Learn the types of allergies, specific allergy symptoms, and emergency warning signs. Allergy headaches can be very painful. Learn the symptoms and triggers for allergy headaches and find treatment. Obstruction in other sinuses can cause pain on the top of your head or elsewhere. Sinus pain can be dull to intense; it often begins in the morning and becomes less intense after you move from lying flat to sitting or standing in.
Informtion people's skin will burn if there is enough exposure to ultraviolet radiation. However, some people burn particularly easily or develop exaggerated skin reactions to sunlight. Certain ingredients used in cosmetics, such as fragrances and preservatives, can act as allergens, substances that trigger an allergic reaction. Nickel Allergy A nickel allergy is a skin reaction that develops after exposure to nickel or items containing the metal.