| Allergic headaches
Sneezing and runny noses are the most common indication of allergies. Only a small percentage produce a headache as the primary symptom. Sometimes the allergen will be something you inhale, like strong perfume, but food allergies are more common.
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| Ear and sinus allergies
Like a toppling line of dominoes, one allergic reaction can lead to another. If you've ever suffered hay fever or other allergies, you know that the sinuses are the first to go.
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| Hay fever
Hay isn't the issue. Your eyes are red; your nose is running; your head is stopped up. Fever is the least of your problems. Still, it's called hay fever.
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| Pets and pollens
Ragweed and old' Rover have one thing in common: if you're allergic, they can trigger any number of reactions ranging from a congested, runny nose to red, swollen eyes.
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