What are the symptoms of altitude sickness?

Altitude sickness: Acute altitude sickness may be associated with any combination of the following symptoms: fatigue, headache, dizziness, insomnia, shortness of breath during exertion, nausea, decreased appetite, swelling of extremities. Altitude sickness develops when the rate of ascent into higher altitudes outpaces the body's ability to adjust to those altitudes.

Golden Rules: Golden rule i: if you feel unwell at altitude it is altitude illness until proven otherwise golden rule ii: never ascend with symptoms of ams. Golden rule iii: if you are getting worse, go down at once...Or risk dying golden rule iv: if someone is sick at altitude, think about altitude illness, but don’t stop thinking beware the danger zone , keep fast descent open, & don't sedate breathing.