The disease itself does not affect the natural life expectancy of the patient. Assuming that the patient is 50 years old and has contracted myelitis, he or she will have no problem living to the age of 80 as long as he or she is well taken care of. If the person is 20 years old and gets spondylitis, he or she will also have no problem reaching 70-80 years old with proper daily care. The ultimate lifespan of a person with myelitis depends on whether or not the person will suffer from a variety of later complications. Patients with myelitis usually have varying degrees of paralysis of the lower limbs. If complete paralysis of both lower limbs results in being bedridden or requiring a wheelchair for mobility, a series of complications can easily arise, with lung infections, bedsores, and urinary tract infections being the most common. If these complications can be avoided with proper care, they will have little impact on the patient’s health. If complications occur frequently, the patient’s function will be impaired, and in the later stages of the disease, multiple organ failure will occur, resulting in the patient’s death.