• Runny and/or stuffy nose
• Red, itchy, watery eyes and allergic conjunctivitis
• Coughing, sneezing, wheezing, blockage of the airways, asthma
• Earaches
• Skin rashes such as eczema, hives, and contact dermatitis
• Headaches, particularly due to chemical sensitivities
• Gastrointestinal disturbances such as diarrhea, constipation, cramping, gas, heartburn
• In severe cases, anaphylaxis. Symptoms of anaphylaxis are life-threatening and emergency medical care is vital. Symptoms include a tingling sensation, itching, metallic taste in the mouth, severe hives, a sensation of warmth, asthma symptoms, swelling of the mouth and throat area, difficulty breathing, vomiting, diarrhea, cramping, a drop in blood pressure, loss of consciousness, possible coma and death.

Diagnosis
Allergies can’t be cured, but they can be managed effectively. Identifying an allergen is the first line of defense in reducing allergic symptoms.

Sometimes identifying an allergen can be simple. For instance, you might take penicillin and experience a severe, overwhelming reaction. At that point, you know that avoiding penicillin is a must. Similarly, if you develop a severe allergic reaction to a bee sting, you know that you need to stay away from bees and all bee products such as honey and bee pollen.
However, many allergens are not that clear-cut. Many people suffer from allergies due to multiple allergens, making the task of allergen identification painstakingly difficult.

Below are the most common ways you can identify the allergens that are causing you the most grief.

• Skin Testing. Skin testing is performed in a doctor's office, and involves pricking the skin with allergen extracts to see if they cause a known allergic reaction. Other methods of skin testing include an injection of allergen extract under the skin, or wearing a patch containing an allergen extract.
• Elimination diet. Foods are taken out of the diet entirely and then re-introduced. Re-introduction of an allergenic food will produce an immediate allergic reaction.

Additional Information about Allergies

1. Allergies Overview
2. Common causes of allergies
3. Help me choose a natural and alternative treatment for allergies
4. Dietary and lifestyle recommendations that may help in the treatment of allergies
5. Conventional or prescription medications used in the treatment of allergies
6. Cited Sources and Additional Reading for allergies

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