Final answer:
Migraine headaches are typically caused by vasoreactivity and oxyhemoglobin desaturation. These can be triggered by various factors and may include nausea as a symptom. Tension headaches, while common, are not typically related to these causes.
Step-by-step explanation:
The type of headache caused by vasoreactivity and oxyhemoglobin desaturation is most often a migraine headache. Migraines occur when blood vessels in the head dilate or expand. This can be triggered by various factors including certain foods, bright lights, and weather changes. Additionally, migraines often come with symptoms like nausea and can be treated with prescription drugs. Exposure to high altitudes, resulting in lower oxygen levels, can cause acute mountain sickness (AMS), which is characterized by symptoms like headaches and fatigue. Persistent vasoreactivity and insufficient oxygenation can lead to these headaches, which signal the body's difficulty in acclimatizing to the new environment. It is important to note that while tension headaches are the most common type of headaches and can be caused by stress, which increases pain sensitivity, they are not typically associated with vasoreactivity and oxyhemoglobin desaturation.