good morning sir.....my father-in-law age 73yrs is suffering from COPD from last few years.he dont have any problem in change of weather,but while a little walk at home,while changing clothes ,bathing,eating food he has having severe problem-unable to breathe properly.Recently having warm feeling in legs from toe to knee in front portion,due to this he is unable to sleep properly at night.kindly suggest what is the actual problem?waiting for your consultance.thank you.good day