Transverse myelitis (TM) is a neurological disorder characterized by inflammation of both sides of a section of the spinal cord, which can lead to pain, muscle weakness, paralysis, and sensory problems. The incidence varies from 1 to 8 cases per million per year and can be idiopathic or related to other diseases such as multiple sclerosis. Diagnosis typically involves MRI and lumbar puncture, while treatment may include corticosteroids and physical therapy to manage symptoms and improve daily functioning.