The problem in seborrheic dermatitis is in the oil (sebaceous) glands and hair follicles. People with seborrheic dermatitis produce too much sebum (the natural skin oil). Later, pityrosporum yeast grows excessively in the sebum, sometime along with bacteria, making the dermatitis more persistent.Bottom line, it sucks. Besides becoming "sly", I am hopeful that shaving the dome will help relieve some of the irritation.