Altitude sickness may affect menstruation because there are many factors that affect menstruation, such as excessive mental stress, cold stimulation or illness, and taking certain medications may affect menstruation, and altitude sickness may also cause menstrual disorders. High altitude reaction refers to the body’s rapid entry into a high altitude area, due to the low pressure and low oxygen environment, resulting in physical discomfort symptoms. Some patients may experience headache, insomnia, loss of appetite, fatigue, difficulty in breathing, etc. In addition to the above symptoms, some patients may also experience menstrual disorders. There is no need to worry too much about this situation, when the symptoms of plateau reaction appear, you need to actively carry out symptomatic treatment, when the plateau reaction improves or get out of the plateau area, the patient’s menstruation may return to normal.