What are some common signs of altitude sickness experienced by individuals?

Altitude sickness, also known as acute mountain sickness (AMS), typically manifests with a range of symptoms that result from decreased oxygen availability at high elevations. The common signs associated with altitude sickness include headache, nausea, dizziness, and fatigue.

A headache is often one of the first symptoms, possibly due to changes in pressure and oxygen levels affecting blood vessels and brain function. Nausea can occur as the body struggles to adapt to the lower oxygen environment, leading to gastrointestinal discomfort. Dizziness is particularly prevalent as the brain may not receive sufficient oxygen, causing disorientation and imbalance. Fatigue, stemming from increased effort in breathing and physical activity in thinner air, is a key indicator that the body is not functioning optimally due to altitude.

This set of symptoms is commonly recognized and serves as an early warning signal for altitude sickness, prompting individuals to descend to lower elevations or take other preventive measures.