Always inexplicably irritable, may be caused by the following reasons: 1, there may be depression, anxiety and other psychological disorders, depression, anxiety can easily make people appear irritable, happy, easy to get angry, low self-esteem, self-blame, lack of sense of hope for the future, as well as attention, memory loss. It is easy to get angry with people over trivial matters, and even quarrel with people, fight, etc. 2, there may be stress, frustration and other psychosocial factors, such as economic pressure is relatively high, interpersonal tension, husband and wife do not get along, family conflicts and so on. These problems can easily make people depressed, depressed and irritable. It is difficult to get an effective solution to these problems within a short period of time, and it is easy to feel tired and even hopeless after a long period of time. 3. It may be caused by physical diseases, such as hyperthyroidism, hormone secretion abnormalities, especially sex hormone secretion abnormalities, etc. These are easy to make people have a big temper, love to get angry, inexplicable conflicts with people and other problems. These causes are relatively common.