Traveling to Qinghai, I had a headache caused by altitude sickness the next day.

Problem analysis:

Headache caused by altitude sickness is caused by hypoxia in the body, leading to edema of brain cells and increased intracranial pressure. In severe cases, vomiting, blurred vision, and breathing may occur at the same time. Difficulty and other symptoms.

Opinions and suggestions:

It is recommended to go to the hospital in time and receive oxygen treatment. If possible, hyperbaric oxygen can be given. If the condition persists, you should consider returning to plain areas in time.