I would like to know if extreme anxiety or stress can cause certain aymptoms of a mini stroke?

Anxiety shows itself: In may ways. Once can mentally obsess over things that frighten the person or do behaviors to keep danger away, e.g., ritual behaviors, checking and re-checking. There can be heart palpitations, shortness of breath, sweating, sleeplessness, GI symptoms, etc. Please see doctor and then go to a mental health professional to learn ways to deal w/anxiety. Peace and good health.