Allergy

allergiesallergicallergic reactionallergic reactionsallergologyallergic diseasesallergistallergologistallergic responsesanti-allergic
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment.wikipedia
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Allergen

allergensallergenicantiallergic
Common allergens include pollen and certain food.
Such reactions are called allergies.

Allergic conjunctivitis

red eyesallergic rhinoconjunctivitisconjunctivitis, allergic
Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling.
Allergic conjunctivitis is inflammation of the conjunctiva (the membrane covering the white part of the eye) due to allergy.

Food allergy

food allergiesfood allergensallergy
These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.
Risk factors include a family history of allergies, vitamin D deficiency, obesity, and high levels of cleanliness.

Rhinorrhea

runny nosenasal dischargerhinorrhoea
Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling.
Rhinorrhea is a common symptom of allergies (hay fever) or certain diseases, such as the common cold.

Skin allergy test

skin prick testskin prick testingscratch test
Further testing of the skin or blood may be useful in certain cases.
Skin allergy testing or Skin prick test is a method for medical diagnosis of allergies that attempts to provoke a small, controlled, allergic response.

Mast cell

mast cellsanaphylactic degranulationmastocytes
The underlying mechanism involves immunoglobulin E antibodies (IgE), part of the body's immune system, binding to an allergen and then to a receptor on mast cells or basophils where it triggers the release of inflammatory chemicals such as histamine.
Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing, angiogenesis, immune tolerance, defense against pathogens, and blood–brain barrier function.

Insect sting allergy

Insect stingallergiesinsect stings
Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin.
Insect sting allergy is the term commonly given to the allergic response of an animal in response to the bite or sting of an insect.

Penicillin

penicillinspenicillin Gpenicillin allergy
Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin.
About 10% of people report that they are allergic to penicillin; however, up to 90% of this group may not actually be allergic.

Angioedema

angiooedemahereditary angioedemaangioneurotic edema
Symptoms of food allergy include abdominal pain, bloating, vomiting, diarrhea, itchy skin, and swelling of the skin during hives.
The version related to histamine is due to an allergic reaction to agents such as insect bites, foods, or medications.

Insect bites and stings

insect biteinsect bitesbites and stings
Food, insect stings, and medications are common causes of severe reactions.
Stings from fire ants, bees, wasps and hornets are usually painful, and may stimulate a dangerous allergic reaction called anaphylaxis for at-risk patients, and some wasps can also have a powerful bite along with a sting.

FCER1

high affinity IgE receptora receptorFcεRI
The underlying mechanism involves immunoglobulin E antibodies (IgE), part of the body's immune system, binding to an allergen and then to a receptor on mast cells or basophils where it triggers the release of inflammatory chemicals such as histamine.
The high-affinity IgE receptor, also known as FcεRI, or Fc epsilon RI, is the high-affinity receptor for the Fc region of immunoglobulin E (IgE), an antibody isotype involved in the allergy disorder and parasites immunity.

Basophil

basophilsbasophil granulocytebasophilic
The underlying mechanism involves immunoglobulin E antibodies (IgE), part of the body's immune system, binding to an allergen and then to a receptor on mast cells or basophils where it triggers the release of inflammatory chemicals such as histamine.
Basophils appear in many specific kinds of inflammatory reactions, particularly those that cause allergic symptoms.

Sinusitis

sinus infectionrhinosinusitischronic sinusitis
Sinusitis can be caused by infection, allergies, air pollution, or structural problems in the nose.

Allergic rhinitis

hay feverhay-feverhayfever
These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis. The hygiene hypothesis was developed to explain the observation that hay fever and eczema, both allergic diseases, were less common in children from larger families, which were, it is presumed, exposed to more infectious agents through their siblings, than in children from families with only one child.
Allergic rhinitis is the type of allergy that affects the greatest number of people.

Corticosteroid

corticosteroidssteroidssteroid
Treatments for allergies include avoiding known allergens and the use of medications such as steroids and antihistamines.
Allergy and respirology medicine

Antibiotic

antibioticsantibacterialantibacterials
Aside from these ambient allergens, allergic reactions can result from foods, insect stings, and reactions to medications like aspirin and antibiotics such as penicillin.
Side effects may reflect the pharmacological or toxicological properties of the antibiotic or may involve hypersensitivity or allergic reactions.

Itch

itchingpruritusitchiness
Symptoms of food allergy include abdominal pain, bloating, vomiting, diarrhea, itchy skin, and swelling of the skin during hives.
Allergic reaction to contact with specific chemicals, such as urushiol, derived from poison ivy or poison oak, or Balsam of Peru, found in many foods and fragrances. Certain allergens may be diagnosed in a patch test.

Dermatitis

eczemaallergic dermatitischronic eczema
The hygiene hypothesis was developed to explain the observation that hay fever and eczema, both allergic diseases, were less common in children from larger families, which were, it is presumed, exposed to more infectious agents through their siblings, than in children from families with only one child.
Cases may involve a combination of irritation, allergy and poor venous return.

Sneeze

sneezingAtchim!Atchoo!
Symptoms may include red eyes, an itchy rash, sneezing, a runny nose, shortness of breath, or swelling.
Sneezing is also triggered by sinus nerve stimulation caused by nasal congestion and allergies.

Rash

skin rashrashesskin rashes
Food allergy

Immune system

immuneimmune responseimmune responses
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment.
They are most often associated with allergy and anaphylaxis.

Milk

cow's milkcow milkwhole milk
A wide variety of foods can cause allergic reactions, but 90% of allergic responses to foods are caused by cow's milk, soy, eggs, wheat, peanuts, tree nuts, fish, and shellfish.
Fresh goats' milk is sometimes substituted for breast milk, which introduces the risk of the child developing electrolyte imbalances, metabolic acidosis, megaloblastic anemia, and a host of allergic reactions.

Bronchoconstriction

bronchoconstrictorrespiratory problemsairway constriction
Exercise and allergies can bring on the symptoms in an otherwise asymptomatic individual.

Hypotension

low blood pressurehypotensivelow
Depending on the rate of severity, anaphylaxis can include skin reactions, bronchoconstriction, swelling, low blood pressure, coma, and death.
acute, life-threatening allergic reaction

Anaphylaxis

anaphylactic shockanaphylacticanaphylactic reaction
These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.
Anaphylaxis is a serious allergic reaction that is rapid in onset and may cause death.