I was reading an article recently about how inpatient admissions rise every time we change our clocks, I think there are a lot of factors that come up...I have in the past had seasonal episodes, every spring and every fall I would go through the whole range of mood swings...manic/mixed/depressed. So there is the seasonal change, plus the grief of spending holidays without family...if you go to therapy, I would definitely talk about it and perhaps talk to your pdoc about anything you might be able to do medicine wise to try and preempt a mood swing. the awareness my therapist and pdoc have about my seasonal swings have been very helpful in keeping me stable the past 2.5 years.