That is very hard to answer. Generally, the best way to determine if stress is a major aggravator of symptoms is to perform a simple experiment. Track the intensity of the symptom (s) during the period of stress (perhaps during the work week if that is the potential cause) and during periods when the stress is removed (a prolonged vacation for this example). Weekends are not necessary the best time to determine if work is the cause of the stress, since many individuals find themselves overly stressed by the need to attend to all personal and family matters during the weekend. If symptoms significantly improve on vacation, assuming the vacation is not creating problems, you have your answer.
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