Hi doctor, my mom aged 53 and wieght 110 kg experiencing breathing difficulties for the past 6 months. when she went to doctor they took ecg,echo test,cholesterol,stomach ultrasound everything came normal but still she is experiencing breathing diff?

? asthma/obesity: either or both can cause breathing difficulty, good that you ruled out heart problems, however if she has chest pain, cirinary arteris disease will need to be ruled out as well. A pulmonologist input would be in order, start with her primary doctor who may want to do spirometry with and without a bronchodilator to check for an airways problem, wish you both wellness