Final answer:
The common clinical symptoms of anemia include weakness, fatigue, poor concentration, and shortness of breath during activity. Iron-deficiency anemia is the most common type, resulting from a lack of iron in the body.
Step-by-step explanation:
The common clinical symptoms of anemia include weakness, fatigue, poor concentration, and shortness of breath during activity. These symptoms occur because anemia results in an inadequate volume of red blood cells, reducing the amount of oxygen that the blood can carry. Iron-deficiency anemia is the most common type, which happens when the body does not receive enough iron, leading to improper functioning of hemoglobin.