What should I do if I experience an adrenal crisis?

Why would it happen? What makes you think you will have an adrenal crisis. Did you have adrenalectomy or addison's disease? Did your doctor advise you to wear a medic alert bracelet?
Steroid injection. The most important medication to give during an adrenal crisis is steroid. If this is a true adrenal crisis, a shot will be needed to get the hormone to your body quickly. You will need fluids and a look at your electrolytes to make sure they are ok.