Question

Why does nose bleed at high altitude? ​

Answer 1

Hot climates with low humidity or changes from bitter cold to warm, dry climates can cause drying and cracking inside the nose, which can lead to a nosebleed. High altitude - as altitude increases, the availability of oxygen decreases, making the air thinner and drier. The dryness can cause the nose to bleed.

Answer 2

As the altitude increases, atmospheric pressure decreases. There will be

less oxygen at high altitudes, due to which the blood vessels present inside

our nose bursts and starts bleeding.

HOPE IT HELPS YOU :)