Agnogenic Myeloid Metaplasia (AMM) is a rare disorder that affects the bone marrow. It is also known by several other names such as Primary Myelofibrosis (PMF), Chronic Idiopathic Myelofibrosis (CIMF), Myelofibrosis with Myeloid Metaplasia (MMM), and Myelosclerosis with Myeloid Metaplasia. AMM is characterized by the abnormal growth of fibrous tissue in the bone marrow, leading to anemia, fatigue, an enlarged spleen, and other symptoms. Treatment options are limited and may include blood transfusions, chemotherapy, or stem cell transplantation. While the name may change, AMM remains a challenging condition for patients and healthcare professionals alike.