心理卫生学(mental hygiene)
一种维持心理健康、预防精神疾患、并帮助人们发挥心理潜能的科学。心理卫生学包括所有用以促进或保持心理健康的方法：心理失调的复原、精神疾患的预防以及协助因应外在压力。社区心理保健学认为心理健康、人口压力及社会不安之间有相互关系，他们也处理某些社会问题，例如药物滥用及自杀防治。对於各种不同年纪的精神疾患的治疗，他们的方法从较消极的忽视、投药、孤立，到较积极的治疗及社会整合，通常是具理想性的改革者。精神疾患的预防包括出生前的照护、虐待儿童警示方案以及对犯罪受害人的心理辅导。治疗方法包括心理治疗（psychotherapy）、药物治疗（drug therapy）、及支持团体（support groups）。他们还有一项最重要的工作，则是透过大众教育去对抗加诸在精神疾患患者身上的污名（stigma），并鼓励患者去接受治疗。
English version：
mental hygiene
Science of maintaining mental health and preventing disorders to help people function at their full mental potential. It includes all measures taken to promote and preserve mental health: rehabilitation of the mentally disturbed, prevention of mental illness, and aid in coping in a stressful world. Community mental health acknowledges the relation between mental health, population pressures, and social unrest. It also deals with social problems, from drug addiction to suicide prevention. Treatment of the mentally ill through the ages has ranged from neglect, ill treatment, and isolation to active treatment and integration into the community, often in response to crusading reformers. Prevention of mental illness includes prenatal care, child-abuse awareness programs, and counseling for crime victims. Treatment includes psychotherapy, drug therapy, and support groups. One of the most important efforts is public education to combat the stigma still attached to mental illness and encourage those affected to seek treatment.