The autoimmune disease can be a lifelong condition. However, many people with autoimmune diseases live long and healthy lives. Most people with autoimmune diseases can expect to live an average lifespan with proper treatment. However, some autoimmune diseases can be life-threatening. Treatments are available to help manage the symptoms and keep the disease under control. If you have an autoimmune disease, it is essential to work with your healthcare team to manage the condition and make sure you are getting the best possible care.