If someone experiences high levels of emotional stress and trauma can this cause heart arrythmia? can this arrythmia settle down once the trauma is dealt with?

If you have heart irreg. pl. see your MD right away. Yes heart irreg. can be caused by emotional trauma but need to be treated instead of waiting for trauma to heal

Please seek treatment with a Cardiologist Doctor for the arrhythmia and then see a Clinical Psychologist with expertise in multiple types of psychotherapy to help you cope with emotional stress and trauma since this can worsen your physical health.