Irritability
Many people who suffer from anxiety also struggle with irritability, or the tendency to become easily angered or frustrated. This is especially true of adolescents and teens, with anxious adolescents being more irritable and volatile than their peers. However, many adults experience irritability as a result of their anxiousness.
Irritability may affect your perceptions of the world and how you interact with your friends and family, causing pressure and conflict in relationships, which can be a source of anxiety in and of itself. This is another vicious cycle, similar to fatigue, in which increased anxiety leads to more irritability and vice versa.