Seborrheic dermatitis, also known as seborrheic eczema, is a chronic, superficial inflammatory skin disease characterized by papular and scaly eruptions that occur in areas with excess sebum production. It often causes varying degrees of itching and commonly affects areas rich in sebaceous glands, such as the head, face, and trunk, and is more frequently seen in adults and newborns. The exact cause of this condition is still unclear; it is generally considered to be related to sebum secretion and changes in its chemical composition. Additionally, colonization and infection by Malassezia, as well as several other factors such as stress, diet, deficiency in B vitamins, and alcohol consumption, can also influence the occurrence and development of the disease. Since the causal factors are not well understood and there are many triggering factors, the disease has a chronic course and can recur repeatedly. Although seborrheic dermatitis can be cured, it can still recur.