Allergy

allergiesallergic reactionallergicallergic reactionsallergologyallergic diseasesallergistallergologistanti-allergicallergic conditions
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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Allergic conjunctivitis

Giant papillary conjunctivitisred eyesallergic rhinoconjunctivitis
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.

Allergen

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

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 viral infections, 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 degranulationMast cell disease
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

angiooedemaangioneurotic edemahereditary angioedema
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 bitesInsect sting
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

FcεRIhigh affinity IgE receptora receptor
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.

Immune system

immuneimmune responseimmune function
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.

Sinusitis

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

Allergic rhinitis

hay feverhayfeverhay-fever
These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.
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.

Antibiotic

antibioticsantibacterialtopical antibiotic
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.

Sneeze

sneezingAtchoo!Achoo
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.

Bronchoconstriction

Broncho-constrictionbronchoconstrictorrespiratory problems
Exercise and allergies can bring on the symptoms in an otherwise asymptomatic individual.

Atopic dermatitis

atopic eczemaatopiceczema
These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.
According to the hygiene hypothesis, early childhood exposure to certain microorganisms (such as gut flora and helminth parasites) protects against allergic diseases by contributing to the development of the immune system.

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.

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.

Hypotension

low blood pressurehypotensivelow
Depending on the rate of severity, anaphylaxis can include skin reactions, bronchoconstriction, swelling, low blood pressure, coma, and death.