Symptoms of a low hemoglobin count in the blood include fatigue, shortness of breath, a heart that races more than usual during exercise, and paleness in the skin and gums, explains Mayo Clinic. A doctor can order a labo... More »

Inadequate generation of red blood cells, platelets or white blood cells by the bone marrow can cause a low blood count. This can occur due to certain bone marrow diseases such as paroxysmal nocturnal hemoglobinuria, apl... More »

Having a low blood count means that a person's bone marrow is not making enough of one or more types of blood cells, according to the Aplastic, Anemia & MDS International Foundation. The medical term for a low blood coun... More »

Symptoms of low iron in the blood, or iron-deficiency anemia, include weakness, fatigue, shortness of breath, pale skin and dizziness, according to Healthline. Soreness or swelling of the tongue, a feeling of tingling in... More »

A low red blood cell count, most often referred to as anemia, can cause weakness, fatigue, dizziness, fainting, lack of energy, pale skin, rapid heart rate or palpitations and shortness of breath. Chronic anemia in child... More »

Symptoms of low hemoglobin levels, a contributing factor of anemia and blood count-related illnesses, include fatigue; shortness of breath; weakness; or a fast or irregular heartbeat, according to Mayo Clinic. Some patie... More »

Common symptoms of having a low white blood cell count include fatigue, shortness of breath, weakness and recurrent infections that are difficult to treat, according to HealthGrades. Those who struggle with a bad infecti... More »