At an altitude of 3800 meters there is a possibility of plateau reaction.
Plateau reaction refers to a kind of uncomfortable symptom after reaching a certain altitude (generally more than 2700 meters above sea level). Mostly due to the body in a short period of time difficult to adapt to the altitude change caused by the change in air pressure difference. As the oxygen content of the air decreases, it triggers headache, dizziness, blurred vision, chest tightness, palpitation, dyspnea and other uncomfortable symptoms.
The higher the altitude of the plateau, the greater the chance of plateau reaction, so it is possible to have a plateau reaction at an altitude of 3,800 meters. In addition, for patients who themselves have cardiovascular and cerebrovascular diseases, hypertension, chronic obstructive pulmonary disease, severe anemia, gastrointestinal disorders and other underlying diseases, it is more likely to have a plateau reaction.
If you feel unwell, you should consult a doctor and follow medical advice.