Have diagnosed with Atrial septal defect and treated with device closure for the same symptoms mentioned above. During the diagnosis, doctor told that these symptoms are not ASD related and we accidentally found ASD. Getting the same symptoms again after a year and recent months it is occurring frequently. Did ECG, echo and brain MRI to rule out Transient Ischemic attack. All of these are normal and no issues with device closure too. I'm also facing pain in the left side chest bones randomly when I touch and press gently. Help me to identify which specialist should I proceed and identify the problem further.