Allergy - Animated Medical Dictionary

1 hrs    

Video - 80    

The FOCUS Animated Pocket Dictionary of Allergy, the first ever animated dictionary in the subject, is a comprehensive reference source for the definition of terms related to allergic reactions and their treatment. A must-have resource for physicians and students who would greatly benefit from this module, it covers 80 related terms and definitions.

Chapter

Allergy - Animated Medical Dictionary
  • Allergen extract

    Allergen extract is a combination of multiple allergens, enzymes, proteins and other compounds developed from natural allergen sources like weed, grass, pollens, fungal spores, animal dander, insect venoms, house dust, mites, fecal matter, etc. Allergen extracts are used in diagnostic skin testing, in vitro tests, allergen specific immunotherapy, etc. Standardization of allergen extracts is necessary to maintain their quantitative effect as they are prepared from natural sources.

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  • Allergens

    Allergens are usually harmless foreign substances that trigger the body's immune system to react by producing the antibody immunoglobulin E (IgE) in abnormal quantities thereby causing inflammation and typical allergic symptoms. Asthma is often an allergic reaction to something that is inhaled, and nasal symptoms such as allergic rhinitis can be caused by pollens, dust mites or molds.

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  • Allergic angioedema

    Allergic angioedema is the rapid swelling of the dermis, subcutaneous, and submucosal layers of skin due to the accumulation of fluid leaking from blood vessels. Swelling normally occurs on the lips, eyelids, mouth, throat, tongue, genitals, and hands or feet. Allergic angioedema may be hereditary and occurs due to mutation in SERPING1 gene or is acquired due to allergy.

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  • Allergic Bronchopulmonary Aspergillosis (ABPA)

    Allergic bronchopulmonary aspergillosis (ABPA) is a condition that arises due to elevated immune response to spores of the fungus Apergillus. It is found mostly in patients with chronic asthma or cystic fibrosis. ABPA causes airway inflammation which narrows airways which leads wheezing, coughing, and shortness of breath.

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  • Allergic cascade

    Allergic cascade refers to the chain of events that occurs in response to an allergen. The cascade includes complex cellular and chemical interactions that result in the symptoms of allergy like itching, runny nose, nausea, hives, diarrhea, etc. Allergic cascade is triggered when an allergen comes in contact with the immune system and is misinterpreted as a threat. This results in the production of antibodies that attach to basophils and mast cells which release histamines and leukotrienes. This induces allergy symptoms.

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  • Allergic rhinitis

    Allergic Rhinitis or Hay fever is an allergic reaction to pollen, dust or cold affecting the sinus and upper respiratory tract. It is characterised by runny nose, sneezing, itchy throat and eyes.

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  • Allergic salute

    Allergic salute is the upward rubbing of nose with the palm or index finger to reduce itching. This is commonly observed in children and in individuals with persistent allergic rhinitis. Allergic salute does not provide prolong relief from irritation but it clears the disturbing mucus and makes way for easy breathing.

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  • Allergic shock

    Allergic shock refers to an abrupt, severe, and sometimes fatal allergic reactions that can affect any part of the body including the skin, respiratory tract, gastrointestinal tract, and cardiovascular system. It can result in difficulty in breathing, increased pulse rate, kidney damage, unconsciousness, and respiratory or heart failure. The symptoms of allergic shock may be observed within 2 minutes to 2 hours after contact with the allergen. Individuals with asthma, eczema, and hay fever are usually at increased risk of allergic shocks.

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  • Allergic sinusitis

    Allergic sinusitis is inflammation of sinuses or air cavities of nose due to allergy. Swelling occurs due to growth of allergen in nasal cavity. The symptoms of allergic sinusitis include sinus headache, facial tenderness, sore throat and cough.

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  • Allergy shots

    Allergy shots are a type of immunotherapy that consist of tiny amount of allergen or allergens that trigger immune system but not enough to cause allergic reaction. These are administered regularly with gradually increasing doses. Allergy shots desensitize the body to the allergen and develop tolerance to it but do not cure the allergy. Allergy shots are practiced in individuals having recurrent allergic reactions.

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