There are many causes of anemia, and anemia is just one clinical manifestation of many diseases. Which department to visit for anemia should be determined based on the clinical symptoms of the patient. For example, if an anemic patient has symptoms of the digestive tract such as black stools, nausea, vomiting, or even vomiting blood, it is advised to visit the department of gastroenterology. If a female patient also has an increased amount of menstrual flow, prolonged periods, or other irregular menstrual conditions, it is advised to visit the department of gynecology. If a patient has unexplained fever, anemia, and petechiae on the body, it is recommended to visit the department of hematology.