Allergic dermatitis is an inflammatory skin disease related to allergies, so patients with allergic dermatitis must pay attention to their diet: First, it is recommended to eat more foods rich in vitamins and protein, such as apples, pears and lean meat. Furthermore, it is recommended not to drink alcohol and alcoholic beverages, because alcohol will stimulate the aggravation of allergic symptoms and cause the aggravation of dermatitis. Finally, you can eat more fresh fruits and vegetables.