The causes of inexplicable irritability and desire to lose temper need to be analyzed according to past history, as follows: 1. For patients with a significant past history of coronary heart disease, the above-mentioned situation occurs, and the patient should be considered to have coronary artery ischemia, stenosis, and spasm, thus causing insufficient oxygen supply to the cardiac muscle cells; 2. For patients with plant nerve dysfunction, especially those with cardiac neurosis, in excessive The clinical symptoms of irritability can also occur when there is excessive mental tension, excessive stress, excessive fatigue, or poor rest and sleep; 3. When patients have serious endocrine disorders, such as severe hyperthyroidism and hyperadrenocorticism, it can also lead to having the above symptoms. 4. In the case of hypertension, especially when sympathetic tone is increased, the above symptoms can also occur.