Seborrheic dermatitis, also known as seborrheic eczema, is a chronic papular squamous superficial inflammatory skin disease that occurs in areas with excessive sebum secretion. It can be accompanied by varying degrees of itching and is commonly found on the scalp, face, chest, and back where sebaceous glands are abundant. Both adults and newborns are frequently affected. The exact causes of this condition are not yet fully understood. Currently, it is generally believed to be related to an increase in sebum secretion or changes in its chemical composition. Additionally, colonization and infection by Malassezia fungi, along with factors such as stress, diet, vitamin B group deficiency, and alcohol consumption, can all influence the occurrence and development of this disease to varying degrees.