Seborrheic dermatitis is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas of the skin where sebum is secreted, often accompanied by varying degrees of itching. The causes are generally believed to be related to increased sebum secretion or changes in its chemical composition, as well as colonization and infection by Malassezia. Other factors such as stress, diet, alcohol consumption, deficiency of B-complex vitamins, fatigue, emotional stress, infections, etc., can all influence the onset and development of the disease to varying degrees. Clinically, patients are advised to maintain regular life habits, ensure sufficient sleep, adjust their diet, limit polysaccharides and fats, avoid spicy and stimulating foods, avoid alcohol, and consume more vegetables and fruits. As for what types of fruits to eat, it is generally better to choose fruits rich in B-complex vitamins, such as tomatoes, bananas, grapes, kiwis, pears, walnuts, chestnuts, oranges, etc.