Multiple sclerosis is an autoimmune disease where the immune system attacks the central nervous system. In the relapsing remitting form, new symptoms occur in discrete attacks.

• 多发性硬化（MS）是一种自身免疫性疾病，表现为免疫系统攻击中枢神经系统。复发-缓解型多发性硬化的新的症状出现于离散性攻击中。