Is there anything helpful that can be done to ease my dystonia in a stressful situation?

Dystonia treatment. Best treatment botox--tell us cervical, arm or leg dystonia?--yes stress increase dystonia but you can learn maneuvers to suppress it , by activating other muscles.
Distraction. Most patients with dystonia are not able to relax adequately. The dystonia gets worse the harder they try to relax. Often they find that motor function is better when they do not think about what they are doing. Being distracted often helps. Medications rarely help with the condition.