Hi, I m a 63 yr.old man, no serious medical history,,,recently, I spent about 7 months in HI, lost 35 lbs. and then returned to my CO. town of 7,000 ft. elevation. For the first month, I felt like I was 35 yrs. old, walking 3-4 miles a day, jogging, no problem,,,,over the last month, seasonal allergies hit hard, I took my regular annual steroid shot for allergies,,,felt fine for a week,,,,now, extreme fatigue, disoriented, forgetful, anxious, depressed,,,,did an oxy test on finger,,, results said I got down to 83 level during nite (whatever that means?),,,I wake up tired and feel like I was in a boxing match,,,,can t believe I could feel so good a month ago and feel so crappy now, along with borderline paranoia? I have lived in this area (Durango, CO) for over 20+ yrs. without any problem,,,,any ideas what is going on?? Depressed in Durango