When I went to Breckenridge Colorado I had never heard of altitude sickness. Within 6 hours I had migraine, then severe chest pains, abdomen cramping, need to vomit, couldn t breathe. I called my daughter at 630 and told her I needed a hospital. Two hours later, she and her husband a paramedic came he never came passed the door. He said drink water. She gave me a half empty puff can...left. I called myself an ambulance. At hospital my Bp was 220/128...my normal is 126/74...