Pallor of the skin and mucous membranes is commonly caused by anemia, and after major blood loss, indicating insufficient blood volume and reduced hemoglobin. Chinese medicine considers this to be a sign of poor constitution. In addition, such as hemorrhage and shock cause strong capillary constriction. Pale skin and mucous membranes are caused by capillary spasm or insufficient blood filling in the skin, as well as anemic diseases. Which diseases can cause symptoms of pale skin and mucous membranes? How to diagnose and identify these diseases? Diagnosis and identification: 1. Iron deficiency anemia Anemia caused by iron deficiency and affecting hemoglobin synthesis is seen in malnutrition, a large number of small bleeding in the formative years and hookworm disease; as long as women are more likely to suffer from iron deficiency anemia, this is because women will lose blood fixed during the monthly physiological period. Therefore, on average, about 20% of women and 50% of pregnant women have anemia. If the anemia is not very serious, there is no need to take all kinds of supplements, just adjust the diet can change the symptoms of anemia. For example, first of all, you should pay attention to your diet and take a balanced intake of iron-rich foods such as liver, egg yolk and cereals. If the iron intake in the diet is insufficient or the iron deficiency is severe, iron supplements should be taken immediately. Vitamin C can help the absorption of iron, but also to help produce hemoglobin, so the intake of vitamin C should also be sufficient. Secondly, eat a variety of fresh vegetables. Many vegetables are rich in iron. Such as black fungus, nori, hairy vegetables, capers, black sesame, lotus root powder, etc. 2, hemorrhagic anemia Acute massive bleeding (such as gastric and duodenal ulcer disease, ruptured esophageal varices or trauma, etc.) caused by. 3, hemolytic anemia Anemia caused by excessive destruction of red blood cells, but less common; often accompanied by jaundice, called “hemolytic jaundice”; 4, megaloblastic anemia Anemia caused by lack of red blood cell maturation factors, megaloblastic anemia caused by lack of folic acid or vitamin B12, mostly seen in infants and pregnant women with chronic malnutrition; Megaloblastic anemia is a type of anemia in which a large number of megaloblasts are present in the bone marrow. 5. Pernicious anemia: megaloblastic anemia lacking internal factors. 6.Aplastic anemia is accompanied by lack of gastric acid and atrophy of the lateral and posterior columns of the spinal cord, with a slow course; anemia caused by hematopoietic dysfunction, aplastic anemia (AA, referred to as repletion), is caused by a variety of causes of bone marrow stem cells, damage to the hematopoietic microenvironment and changes in immune mechanisms, resulting in bone marrow hematopoietic failure, with a decrease in whole blood cells (red blood cells, granulocytes, platelets) as the main manifestation of the The main manifestation of the disease is a decrease in whole blood cells (red blood cells, granulocytes, platelets).