1. Chronic fatigue caused by diseases such as internal diseases(for example, pulmonary emphysema, rheumatoid arthritis, etc.), mental illness(for example, any type of dementia paranoids, depression, etc.), some diseases that just onset or evaluated (for example, sleep deprivation, untreated diabetes, etc.), some diseases that need recovery gradually(for example, restless legs syndrome, lactation, etc.), morbid obesity;