After dinner we went out for a walk for about half an hour. When we nearly reached home, my Dad started faltering, we had to half carry him home--he still took steps, but more like automatically. He was conscious but somewhat confused. This has happened before many times over the past 10 years, 2-5 times a year, maybe a little worse in hot summers. We took him for check ups both in China and in US, but nothing seems too bad from blood work, and x-rays. the only thing we don't know why is there's some protein in the urine.
He usually recovers after a few minutes sometimes with cold sweats. He's otherwise healthy and used to take hour-long walks. Please suggest what we should do. sorry for typing in English on work computer. Please help. Thank you.
