' Seborrhea on the face and body gets better if it is washed every day with soap and water. Rest and exercise, especially outdoors, also help. Sunlight seems to stop growth of the yeast organism that causes affected areas to become inflamed.'
"Seasonal Changes - The lack of UV light during the winter months causes flare ups. The suns rays help to slow down cellular turnover, which is beneficial to the condition. In addition, the cold dehydrates the skin which can make the appearance of the flaking worse."
So...sun and warmth=good, cold=bad.
Maybe you are the one that is mixed up about which one you have...