The length of time a person with leukoaraiosis can live cannot be generalized and depends on the disease progression and treatment status. Leukoaraiosis is a vascular inflammatory disease that manifests itself mainly as recurrent oral ulcers, genital ulcers, ophthalmia, and skin damage, and can involve multiple systems throughout the body, such as joints, the digestive tract, and the nervous system. The vast majority of early-stage patients can control their disease well and even achieve clinical remission after effective treatment, and their life expectancy is basically unaffected and no different from that of normal people. A small number of patients with damage to the nervous and cardiovascular systems have a poor prognosis, especially when neurological lesions occur, and patients have a high mortality rate. A few patients die 1-2 years after the onset of the disease due to damage to important organs as a result of untimely diagnosis and treatment. If patients are diagnosed with leukoaraiosis, it is important to go to the hospital for systematic treatment in a timely manner. Patients with mouth ulcers should pay attention to using a soft-bristled toothbrush to keep their mouth clean and not to eat irritating foods.