Two ideas. Do you use an anti-fungal of any kind, such as ketoconazole? If not, do you take any supplements or vitamins that have niacin?

Either of those combined with bipolar meds can cause serious blushing.

Final thought. Alcohol, even in small amounts with some of our meds can also cause blushing.

I got this info from the drug interaction checker on webmd. Check it out if you want to see what med may be causing it:

http://www.drugstore.com/pharmacy/dr...&atrxp4=111573