Neurodermatitis, also known as chronic simple lichen, is a common skin disorder characterized by episodic intense itching and lichenoid skin changes. It is a chronic inflammatory dermatoneurosis. The causes of neurodermatitis may be related to a variety of internal and external factors including neuropsychiatric factors, gastrointestinal dysfunction, endocrine disorders, diet, and local irritation. After being diagnosed with neurodermatitis, it is generally recommended that patients minimize alcohol consumption and reduce intake of spicy, pungent foods, as well as shrimp, crab, and other potentially aggravating seafood.