What is dermatitis, and how do you know whether that itchy, irritated skin is eczema, dandruff or something else? On this episode of Health Matters, Mayo Clinic dermatologist and pediatrician Dawn Marie Davis, M.D., joins host Kristen Meinzer to explain the most common types of dermatitis, including atopic dermatitis, contact dermatitis, irritant dermatitis and seborrheic dermatitis. In this conversation, Dr. Davis breaks down what causes dermatitis, why some people are more prone to it, how