Allergy symptoms are quite common in people and they can be influenced by the environment or one’s genes. Allergies are caused by an overactive immune system. The immune system usually protects us from infections caused by bacteria and viruses. However, when the immune system is over reactive, it can cause the body to launch an attack against the allergens. Histamine is released, causing the symptoms.
There is a wide array of things people may be allergic too. Common types of allergies can include hay fever (allergic reaction to pollen), bee stings, pet allergies, poison ivy and other plants, latex, cosmetics, certain pharmaceutical drugs, mold, food allergies, eyes (conjunctivitis), shellfish, nuts, eggs, milk, fish, soy, wheat, and aspirin.
Symptoms caused by allergens that you breathe in can include an itchy nose and throat, sneezing, stuffy nose, excess mucus, and wheezing.
Allergy symptoms that affect the eyes can include watery, red, swollen, and itchy eyes.
If you eat something that you are allergic to, you may experience vomiting, nausea, abdominal cramps and pain, diarrhea, and rashes. Atopic dermatitis is a type of eczema that is often related to allergies. This type of dermatitis causes skin inflammation, sensitive skin, itchy skin, and rashes that appear to be “wet”. Generally, atopic dermatitis is more often seen in children and babies, but it can affect people at any age.
Sometimes, allergy testing is necessary when people are unsure of what they are allergic too. The most common form of allergy testing is through skin tests. The skin is pricked and the needle places a tiny amount of the suspected allergen(s) onto the skin and then the skin is closely observed.
Some doctors may tell patients to avoid certain items or foods to see if the allergy symptoms get better or not. Physicians may also instruct patients to use or get into contact with the suspected allergens to see if the symptoms worsen. This is known as elimination testing and it is often used to rule out the cause of food allergens.
Some people may experience very severe reactions, known as anaphylaxis. This is a life threatening allergic reaction and it usually happens immediately after one is exposed to the allergen. It usually involves the whole body, and common causes include drug allergies, food allergies (such as nuts), or insect bites or stings). This type of allergy symptom needs to be treated immediately with epinephrine. Those who experience anaphylaxis should carry epinephrine autoinjectors with them (such as an EpiPen).
5 Most Common Allergy Symptoms (Conditions A-Z)