The nature of symptoms that occur during exercise will differ depending on the allergy that is being triggered and the severity of the reaction. In many cases, symptoms will be limited to those associated with allergic rhinitis (hay fever), such as:

• Watery eyes
• Sneezing
• Coughing
• Runny nose
• Sore or itchy throat

Others will experience symptoms of contact dermatitis, including a rash of itchy, red, small vesicles (a pimple-like blister) that ooze and crust.

In rare cases, symptoms will manifest in the form of anaphylaxis. This is a whole-body allergic reaction that affects two or more body systems, such as the skin, lungs, nose, throat, gastrointestinal tract and heart. Symptoms include:

• Severe itching of the eyes and face
• Feeling anxious
• Palpitations (a strong, fast, irregular, abnormal or "galloping" heartbeat)
• Slurred speech, tongue swelling and inability to swallow
• Swelling of the throat
• Rapid or weak pulse
• Red or swelling skin
• Hives (including on the lips, eyelids, throat and tongue)
• Cramps
• Diarrhea
• Nausea or vomiting
• Wheezing
• Bluish tint to skin (cyanosis), including lips or nail beds
• High-pitched breathing sounds
• Coughing
• Choking
• Nasal congestion
• Breathing difficulty

Most cases of anaphylaxis involve either cardiovascular or respiratory symptoms. The pattern of symptoms also typically remains the same for an individual from episode to episode. Without immediate emergency treatment, anaphylaxis can quickly become life-threatening anaphylactic shock. More advanced signs and symptoms include:

• Collapse or loss of consciousness
• Convulsions
• Loss of bladder control
• Shock
• Stroke
• Cardiac arrest
• Respiratory arrest