An allergic inflammation of the nasal airways. It occurs when an allergen, such as pollen, dust or animal dander (particles of shed skin and hair) is inhaled by an individual with a sensitized immune system.
An inflammation of the paranasal sinuses, which may be due to infection, allergy, or autoimmune issues. Most cases are due to a viral infection and resolve over the course of 10 days. It is a common condition; for example, in the United States more than 24 million cases occur annually.
A common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm. Common symptoms include wheezing, coughing, chest tightness, and shortness of breath.
A lingering cough that follows a viral respiratory tract infection, such as a common cold or flu, and lasting up to eight weeks. Patients usually experience repeated episodes of post-viral cough.
An adverse immune response to a food protein. They are distinct from other adverse responses to food, such as food intolerance, pharmacological reactions, and toxin-mediated reactions.
A kind of skin rash notable for pale red, raised, itchy bumps. Hives might also cause a burning or stinging sensation. Hives are frequently caused by allergic reactions; however, there are many nonallergic causes.
An inflammatory, relapsing, non-contagious and pruritic (itchy) skin disorder.
A term for a skin reaction (dermatitis) resulting from exposure to allergens (allergic contact dermatitis) or irritants (irritant contact dermatitis). Phototoxic dermatitis occurs when the allergen or irritant is activated by sunlight.
A dysfunction of the immune system that can be characterized in several different ways such as whether the immune system is overactive or underactive, whether the condition is congenital or acquired or by the component(s) of the immune system affected.
An allergy to a drug, most commonly a medication. Medical attention should be sought immediately if an allergic reaction is suspected.
A medical term encompassing a range of allergic reactions to natural rubber latex and synthetic rubber.
An allergic response of an animal in response to the bite or sting of an insect. Typically, insects which generate allergic responses are either stinging insects (wasps, bees, hornets and ants) or biting insects (mosquitoes, ticks). Stinging insects inject venom into their victims, whilst biting insects normally introduce anti-coagulants into their victims.
Also called allergic conjunctivitis or ocular allergy, eye allergy occurs when something you are allergic to irritates the conjunctiva. This is the delicate membrane covering the eye and the inside of the eyelid.
General Allergic Disorders
A hypersensitivity disorder of the immune system. Allergic reactions occur when a person’s immune system reacts to normally harmless substances in the environment. A substance that causes a reaction is called an allergen.