When the phone rings, it is very irritating, it may be a problem of over-sensitivity, or it may be caused by conditioned reflexes. If it is already serious, it may be a disease, such as anxiety disorder, the main manifestation of anxiety disorder is easy to nervous, worry, fear, fear, and at the same time easily upset, for the smallest stimulus will seem very irritable, and even quarrel with people, fight, etc.. It is also possible that depression is a problem, and depressed people are also prone to be particularly sensitive to sound. Because depressed patients are depressed, always happy, introverted, have low self-esteem, and are especially sensitive and suspicious of small things. If there is such a problem it is easy to be particularly irritable because of small things, such as the phone ringing or parents talking to him, it is easy to make him appear irritable and irritable. The above reasons are more common.