Patients irritability and irritability can appear in many cases, like schizophrenia, mania, depression, anxiety, etc., as follows: 1, schizophrenia: patients under the domination of delusions, can appear emotional instability, irritability, fear, can be treated with antipsychotic drugs, can well improve these emotional symptoms and delusional symptoms; 2, mania: manic patients can appear emotional agitation, agitation The patient can easily clash with others, with high mood these phenomena; 3, depression: depression attacks when the patient will appear low mood, especially bipolar disorder, depression can turn into manic symptoms, then easy to lose temper is also a symptom of mental abnormalities, can use mood stabilizers, like lithium carbonate, sodium valproate, carbamazepine, can well stabilize mood; 4, anxiety disorders: the patient will appear unstable mood, with irritability, restlessness, you can use anti-anxiety drugs, can be good to improve the mood symptoms.