Eczema is a chronic inflammatory itchy skin disease that is not necessarily caused by allergies, but may also be associated with genetics, immune abnormalities, chronic infectious lesions, endocrine and metabolic diseases. Genetic factors: If an immediate family member suffers from eczema, there is a higher chance that the child will suffer from the disease. Immune abnormalities: If the patient has immune abnormalities such as immune imbalance and immunodeficiency, it can also lead to eczema. Endocrine and metabolic diseases: patients with endocrine and metabolic diseases such as menstrual disorders and diabetes have a higher probability of developing eczema. Infectious diseases: chronic infectious diseases such as chronic cholecystitis, tonsillitis, chronic gastritis, etc. can also induce eczema. In addition, long-term late night, insomnia, anxiety, excessive sweating, mental stress and other people, is also easy to induce eczema. For eczema patients, it is recommended to go to the hospital to clarify the cause of the disease.