Acute Disseminated Encephalomyelitis (ADEM) is a rare autoimmune disorder that attacks the central nervous system. ADEM is also known as Postinfectious Encephalomyelitis or Acute Hemorrhagic Leukoencephalitis. It can cause inflammation and damage to the brain and spinal cord, resulting in neurological symptoms such as seizures, difficulty speaking, and weakness in the limbs. While ADEM is often thought to be a pediatric disorder, it can affect individuals of any age. Other synonyms that may be used to describe ADEM include Acute Demyelinating Encephalomyelitis, Acute Multiple Sclerosis-like Syndrome, and Acute Disseminated Leukoencephalitis. It is important to consult a doctor for proper diagnosis and treatment of ADEM as it can have serious and long-term neurological effects if left untreated.