Acute Disseminated Encephalomyelitides, also known as ADEM, is a rare inflammatory disease that affects the brain and spinal cord. Though the term itself may seem intricate and unfamiliar, understanding its synonyms can shed light on its nature. ADEM can be referred to as post-infectious encephalomyelitis, demyelination syndrome, acute hemorrhagic encephalomyelitis, or simply as acute encephalomyelitis. These alternative names highlight different aspects of the condition, whether it's the involvement of prior infection, the demyelination process, or the presence of bleeding in the affected areas. Familiarizing oneself with these synonyms can contribute to broader comprehension of ADEM and its clinical manifestations.