High altitude reactions usually do not cause sequelae in human body, such as dizziness, headache, chest tightness, shortness of breath and other physiological reactions, and the symptoms can be fully relieved after one to two weeks of rest. If it causes organic damage to the heart, brain, lungs and other organs, it may cause sequelae. If it causes pulmonary edema or prolonged brain hypoxia, it may cause frequent dizziness, inattention and insomnia; if it causes cerebral thrombosis or cerebral hemorrhage, it may lead to hemiplegia and aphasia; if it causes pressure heart enlargement, it may cause recurrent arrhythmias and other clinical manifestations.