http://en.wikipedia.org/wiki/Seborrhoeic_dermatitis Hello. I've had CFS for 3 years and have had a patch of this develop on the side of my face and a spot under my bottom lip for just over two years now. It comes and goes but recently has gotten much more "angry" and seems to be spreading to more areas on my face. I've always had the itchy skin symptom all over my body during my bought with CFS but this something much more annoying and embarrassing. Does anyone else on here suffer from this condition? By the way I don't think it's a coincidence that immune disorder is mentioned as a possible cause in the development of it. The condition is one of the autonomic signs of Parkinson's disease. Those with immunodeficiency (especially infection with HIV) and with neurological disorders such as Parkinson's disease and stroke are particularly prone to it.