To cure allergic dermatitis, the first step is to identify the allergen. Once identified, you can avoid it and use medication in combination, which can completely cure this type of dermatitis. When allergic dermatitis occurs, it is crucial to actively eliminate the allergen and supplement with oral antihistamine medications, as well as traditional Chinese medicine. Treatment should involve a combination of Chinese and Western medicine. Allergic dermatitis must be detected and treated early. Treating this allergy-related skin disease in its mild stages can prevent recurrence. It is also important to persist with medication under a doctor's guidance, as stopping medication midway through treatment or due to fear of side effects can lead to a relapse. For those suffering from allergic dermatitis, diet should also be considered; avoid seafood, shellfish, and spicy or irritating foods.