Dermatitis.

I have always used moisturizer during winter time because of my dry skin. However, something strange happened last spring. Areas of my face turned reddish as if it were flushed and were slightly puffy. It went untreated for a while as I thought it was only a minor irritation or allergic reaction. After 2 months, as it had not gone away yet, and the condition fluctuated between almost about to heal and starting to puff up, I went to a dermatologist who diagnosed this as seborrheic dermatitis. He said it is something I'll always have if I don't wash my face often and keep it clean. He also said moisturizers are off limits as someone my age (19) would not need it.