What’s wrong with being grumpy and irritable lately? In the literal sense of the word, it is a problem of becoming emotionally unstable, easily angry, irritable, hostile, or always feeling that others are unkind to them and therefore want to lose their temper. There are two main problems, one is the deterioration of emotional stability and the other is the tendency to be angry or hostile. This symptom is also called irritability in medical terminology, where the slightest thing causes a strong emotional reaction in the patient. Generally, however, the duration is relatively short. The common cause of emotional irritability is, first of all, fatigue, and the tendency of people to become more sensitive and lose their temper when they are tired. The second common cause is mental disorders, such as mania, depression, personality disorders, neurosis, and paranoid psychosis, and other mental disorders are also prone to irritability. It is best to seek medical attention for a clear diagnosis of irritability in different situations, to see if the irritability is a normal emotional reaction to fatigue or a mental disorder, and if it is a mental disorder, it must be treated urgently.