Sun Yat-Sen Cohort of CNS Idiopathic Inflammatory Demyelinating Diseases

The goal of this observational study is to learn about pathogenesis and clinical prognosis of CNS IIDD in the Chinese population and to provide evidence-based clues for clinical treatment decisions. The main questions it aims to answer are: Question 1: Clarify the clinical characteristics and prognostic factors of various diseases (MS, NMOSD, MOGAD, etc.) within IIDD in the Chinese population. Question 2: Analyze the relationship between biomarkers and the occurrence, progression, and prognosis of CNS IIDD cases in our hospital. Participants will 1. Receive the recommended diagnosis and treatment plans from current international and national guidelines or expert consensus, without additional special interventions. 2. Receive clinical evaluation, follow-up, and management from dedicated neuroimmunology specialists.