Neurodermatitis, also known as chronic simple lichen, is a common chronic inflammatory dermatosis characterized by episodic severe itching and lichenoid changes in the skin. The cause of this condition may be related to various internal and external factors including neuropsychiatric factors, gastrointestinal dysfunction, endocrine disorders, local skin irritation, and diet. Therefore, we generally advise patients with neurodermatitis to minimize alcohol consumption, avoid spicy and hot foods, and restrict intake of fish, shrimp, crab, and other seafood that may exacerbate the condition.