Vitamin C is also known as vitamin C. Lack of vitamin C may cause skin bruises and petechiae, dry skin, iron deficiency anemia and other symptoms. 1. Skin bruises and petechiae: When there is a lack of vitamin C in the body, the brittleness of the capillary walls increases significantly, microvessels are easily ruptured, and blood will flow to neighboring tissues. When the body is slightly bumped, bruises and petechiae may appear. 2. Dry skin: Vitamin C also plays an important role in maintaining skin elasticity, etc. Lack of Vitamin C will reduce the elasticity of skin collagen fibers, thus leading to dry skin. 3. Iron deficiency anemia: If there is a long-term lack of vitamin C intake, it may cause bleeding of the skin and mucous membranes. When long-term bleeding and lack of vitamin C, the body’s daily absorption of iron through the intestinal mucosa is significantly reduced, thus causing the occurrence of iron deficiency anemia. If the above symptoms occur, it is recommended to go to the hospital in time to identify the cause of the disease, under the guidance of the doctor, targeted treatment.