Probably not: Usual symptoms of allergies are sneezing, itching, stuffy nose, runny nose and occasional cough. These symptoms can impair sleep and lead to fatigue. Lightheaded would not be a typical symptom of allergy unless a person is having a severe allergic (anaphylactic) reaction with low blood pressure, but there would be many other symptoms--hives, wheezing, etc.
Answered 2/10/2017
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