An over-reaction of the body's defense system when exposed to substances to which it is sensitive.
A chain reaction that occurs in the body and includes three steps: sensitization, activation of mast cells, and prolonged immune activity.
Allergies are inappropriate reactions of the immune response to substances (allergens) that normally wouldn't cause any noticeable effects. Most allergic reactions involve the allergen binding on to special immune system cells and causing these cells to release compounds that affect the surrounding tissue. One such compound is histamine. It causes itching and inflammation. Chemicals that block the effect of histamine are called antihistamines, and they are standard allergy medication. However, they are not particularly effective in asthma.
An over-reaction by the body to substances that usually do not bother the average person. Reactions include sneezing, itching, runny eyes and nose, rashes, wheezing, and shock.
a hypersensitive response to insect proteins.
What happens to your body when an allergen is inhaled (e.g., pollen), eaten (e.g., peanuts), touched (e.g., pet), or injected (e.g., medicine, bee sting). You may get hives (that's an itchy rash), or a stuffy nose, or you may have trouble breathing if it causes asthma symptoms. Sometimes your eyes get red and swollen and itchy.
An allergic reaction is what results when a person’s immune system reacts adversely to an allergen (see allergen). People react differently to various allergens and some do not experience any noticeable effect at all. Most allergic reactions involve the allergen entering the body (breathed in, through the skin or via food) and latching on to special immune system cells. The allergens cause these cells to release chemicals that give rise to the symptoms of the allergy.
hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
a hypersensitive reaction to a substance to which most people do not react
a hypersensitive response and is the result of how external factors in the world interact with our bodies
an abnormal reaction to protein substances that occur naturally
an exaggerated response or hypersensitivity by the body's immune system to what would otherwise be a harmless substance
an expression of immunity that is basically purposeless, but is built into our bodies for more important functions,'' says Dr
an immune response that should not be occurring because the substance that triggers it should not be dangerous to us
an immune response to a nonharmful substance such as pollen or an excessive immune response
an immune system response to a substance known as a trigger
an immune system response to exposure to a specific substance
an overactive or misdirected immune response to a foreign substance that does not cause a response in most people
an undesirable immunoreaction resulting from the response of an antibody or a sensitized cell to an antigen
a process of inflammation caused by a disorder of the immune system
a response by your immune system
a response to innocuous environmental antigens , or allergens , due to preexisting antibody or primed T cells
a result of a hormone called histamine being released into the body in response to an allergen (the substance causing the allergy)
a sensitivity to a specific substance a person is exposed to
a set of symptoms that the body develops in response to a foreign substance
a specific immune response caused by an allergen
a specific immunologic response to a normally harmless
(al-er-jec re-act-shon) - your body's response to something called an allergen, that is contacted through the skin, by breathing into the lungs, by swallowing, or by injection. Same as Allergy.
means an over-reaction by the immune system to an antigen. It can take the form of a rash, asthma, breathing difficulties, weeping eyes or sneezing.
a response to the presence of a substance ( allergen). This substance may enter the body through skin contact, breathing it in, swallowing, or getting an injection.
Inhaling or touching mold or mold spores may cause allergic reactions in sensitive individuals. Allergic reactions to mold are common and these reactions can be immediate or delayed. Allergic responses include hay fever-type symptoms, such as sneezing, runny nose, redeye, and skin rash (dermatitis). Mold spores and fragments can produce allergic reactions in sensitive individuals regardless of whether the mold is dead or alive. Repeated or single exposure to mold or mold spores may cause previously non-sensitive individuals to become sensitive. Repeated exposure has the potential to increase sensitivity. (EPA, 2001)
changes induced in the body following contact with an allergen to which the body had been previously sensitized.
A systemic or general reaction to some compound, such as bee venom, characterized by itching all over (hives), breathing difficulty, sneezing or loss of consciousness.
Response in sensitive people to specific allergens. An allergic reaction can occur in different parts of the body. Common areas include the skin, the eyes, the respiratory system and the gastrointestinal tract. Symptoms often include itching, sneezing, runny nose, coughing, wheezing or shortness of breath.
the itching and hives some men may experience as an allergic reaction to local or general anesthetic.
Allergic reaction, or an allergy, is an adverse reaction to the body usually characterized by skin redness, itching, blisters and localized swelling.
An abnormal physiological response in a person who has become hypersensitive to a specific substance. Some forms of dermatitis and asthma may be caused by allergic reactions to chemicals
Usually a life threatening event, such as difficulty breathing, rash that is raised and covers body after medicine is started.
The process by which a substance triggers an immune response.
A hypersensitivity reaction to an allergen that causes a variety of symptoms.
An abnormal physiological response to chemical or physical stimuli.
The body´s response to something called an allergen that comes in contact with the skin or enters the body by inhalation, swallowing, or injection.
is indicated by itching, redness and swelling usually only where the offending substance has touched the skin. Treatment includes: STOP using the product, use Hydrocortisone 1% as directed and see a local dermatologist if your symptoms do not subside.
The hypersensitive response of the immune system of an allergic individual to a substance. See the entire definition of Allergic reaction
an adverse immune response following repeated contact with otherwise harmless substances such as pollens, molds, foods, or drugs.
An abnormal response by the body to chemical or physical stimuli (e.g., hives, sneezing).
An adverse immune response following repeated contact with otherwise harmless substances such as pollen, animal dander, dust, mold spores, foods or drugs.
An adverse immune response from the body following repeated contact with cosmetics. Though natural ingredients in cosmetics lessen the chance on allergic reactions than the chemical ingredients; allergic reaction can always happen. (See: Adverse Response)
a hypersensitive reaction to a drug in a person who was previously exposed to the drug or a related chemical and has developed antibodies to it.