Is this work related stress, or just anger?

Hi, thank you for having this forum here to pose my question. I am unsure whether what I am experiencing is classified as workplace stress. I have experienced a series of broken verbal promises relating to my career and promotion. Having been previously told that in next round of promotions I would be promoted, as the time neared, I was then told that I needed to show more evidence of expertise in certain areas. I didn’t have a line manager at the time, but a new manager was due to start. I was informed that one of the first tasks this manager would be set would be to work with me to improve in the one area that I was lacking in. This never happened and I had to instigate the conversation with the new manager and trigger the action to take place. The manager was also surprised that I was not already holding the more senior position, as they had assumed I already was. My peers have also expressed that I am attaining this level already, and I am just as strong (if not stronger in some areas) as other staff at this level. I feel like I have been unfairly held back, and have had a series of previous unfulfilled verbal promises and expectations set.

This has really hacked me off. As a result of feeling held back, let down and promises broken, I have gone beyond feeling angry and have developed ulcerations of the mouth, lost sleep, become irritable and begun to disengage from the work I love and not felt like joining in as socially as I normally would with my colleagues.

I have had no problem with the workload, which is the HSE’s formal definition of stress: “The adverse reaction people have to excessive pressures or other types of demand placed on them at work.” Am I just experiencing anger, that I am finding difficult to manage, or are the symptoms that I have experienced as a result of this episode causing stress? Any help will be greatly appreciated.