Anger and Stress both produce adrenalin. They are dynamically and directly related to each other and cause ill health over time.
Anger can cause stress and stress can cause anger
Whenever you get worked up and emotional over something, you enter an emotional cycle and in micro-seconds the adrenalin begins to flow. The heart races, your blood pressure goes up, you become very tense. You get irritated, frustrated and angry. This causes stress in your body and you go into fight mode or shut down where you can be irrational and irresponsible. You can also stress those around you. The importance of calming down and taking time out cannot be emphasised enough.
On the other hand, if you are stressed, stress causes a number of emotional symptoms such as anxiety, irritability, frustration and anger. When in these emotions you could easily snap at another person, causing them to become emotionally aroused and stressed as well. Here, calming down is also needed.
The bottom line is to stay calm in situations. If something is stressing you out, take some time away from it and come back to it. You will see how much better you will handle the situation and find a solution to a problem.