Hemoglobin H is an abnormal form of hemoglobin that occurs when there is a deficiency of alpha globin chains in the blood. It is typically associated with a type of inherited blood disorder known as alpha thalassemia. In this condition, the body produces an excess of beta globin chains, which then combine to form Hemoglobin H, leading to various health issues. Individuals with Hemoglobin H may experience symptoms such as anemia, fatigue, and jaundice. Diagnosis is usually made through blood tests that identify the presence of Hemoglobin H. Treatment options may include regular monitoring, blood transfusions, or, in severe cases, bone marrow transplantation.