Eczema patients should not drink beer. Eczema is an inflammation of the superficial dermis and epidermis, caused by various internal and external factors. Clinically, the acute phase of the skin lesion is characterized by papules and vesicles with a tendency to ooze, while the chronic phase mainly presents with lichenification and is prone to recurrence. The cause of eczema is unclear. It involves internal factors such as chronic infectious foci, changes in endocrine and metabolism, blood circulation disorders, psychoneurological factors, genetic factors, etc. External factors contributing to the condition may include foods such as beef, lamb, meat, fish, shrimp; inhalants like pollen, dust mites; and environmental conditions such as heat and dryness. Eczema can also be related to contact with animal fur, various chemicals such as cosmetics, soap, synthetic fibers, and notably, beer, which contains alcohol that can aggravate eczema symptoms. Alcohol is a type of irritant food. After it enters the body through the gastrointestinal tract and circulates into the blood vessels, it enhances the permeability of the capillaries. This promotes the release of histamine, increases skin sensitivity, and exacerbates the clinical symptoms of eczema. Therefore, eczema patients should avoid all types of alcohol, including beer.