Von Jaksch syndrome is von Jaksch syndrome. The pathogenic factors are nutritional deficiency (mainly hematopoietic substance deficiency), rickets and long-term chronic or recurrent infections (such as respiratory tract infection, urinary tract infection, skin suppurative infection, etc.). It is characterized by onset in infancy, severe anemia, hepatosplenomegaly, increased peripheral white blood cell count, and the appearance of immature granulocytes and nucleated red blood cells. The disease is chronic. Generally, the prognosis is good, and the disease can be cured after removing the cause, improving nutrition, and treating anemia. It is also called infantile pseudoleukemia anemia, infantile splenomegaly anemia, infectious nutritional anemia, etc.