The common causes of irritability are as follows: 1, psychological problems: when patients come into contact with unhappy things, such as more recent annoyances, their emotions are not easy to control, and they are prone to irritability at this time; 2, disease causes: patients with hypertension usually have difficulty controlling their emotions and are more irritable, and patients with high sympathetic excitability also have difficulty controlling their emotions and are prone to the performance of being more irritable when things happen. Patients with hyperthyroidism are prone to faster heart rates and irritability, and when they have panic attacks, premature beats, or arrhythmias, they also have irritability and difficulty controlling their emotions.