To know if you are anemic, watch for common symptoms such as feeling tired or weak, shortness of breath, dizziness or lightheadedness, pale or yellowish skin, cold hands and feet, and an irregular or fast heartbeat. More severe symptoms may include brittle nails, mouth sores, an inflamed or sore tongue, and unusual cravings for non-food items like ice (called pica). Some people may also experience headache, chest pain, and difficulty concentrating. The most reliable way to diagnose anemia is through blood tests, particularly a complete blood count (CBC) that measures your hemoglobin and red blood cells. Other tests can check your iron levels and related markers to determine if iron deficiency is the cause. If you have symptoms suggestive of anemia, especially fatigue and pale skin, it is important to see a healthcare provider who can perform the necessary blood tests to confirm the diagnosis and determine the cause.