Study on Posttraumatic Stress Disorder after Kagoshima Northwest Earthquake and Avalanche of Earth and Rocks Disaster in Izumi Harihara District

本研究调查了鹿儿岛大地震和泉市土石崩后创伤后应激障碍（PTSD）的特点和免疫功能。根据DSM-IV问卷调查，小学、初中和高中学生中有10.2%患有PTSD。随着时间的推移，发病率逐渐下降。成人的患病率高于学生。对16名受试者进行了细胞免疫功能检测，包括CD 4、CD 8、CD 56和NKCC。3例NKCC低于正常对照组（<-2SD），高于正常对照组7.5倍。CD 4、CD 8、CD 56水平升高，且CD 8、CD 56与焦虑程度呈正相关。而NKCC降低和CD 4、CD 8、CD 56升高与PTSD的发生无关。NKCC随着时间的推移而增加。相反，其他参数下降。当被试被告知他们的免疫功能时，他们第一次向咨询师讲述了他们的压抑经历。身体检查，包括免疫功能可能是有用的咨询对象谁不可预知地遇到了灾难。

We investigated characteristic of posttraumatic stress disorder (PTSD) and immunological function after the Kagoshima Northwestern Earthquake and the avalanche of earth and rocks in Izumi city. Students of 10.2% in elementary, junior and senior high schools were suffered from PTSD according to the DSM-IV questionnaire. The rate of the disease gradually decreased with elapsed time. The rate in adults was higher than in the students. The incidence rate of PTSD remained high (about 20%) 2 years after the avalanche.Sixteen subjects were examined for cellular immunological function by measuring CD4, CD8, CD56, and NKCC. The lower NKCC (<-2SD of normal controls) was observed in three subjects, higher than controls by 7.5 times. The higher level of CD4, CD8, and CD56 were observed, and the levels of CD8 and CD56 were positively associated with the degree of anxiety. However, the lower NKCC and higher CD4, CD8, and CD56 did not correlate with the occurrence of PTSD. The NKCC increased with elapsed time in the three subjects. In contrast, the other parameters decreased. Subjects for the first time talked their suppressed experiences to the counsellor when they were explained about their immunological function. Physical examination including immuological function may be useful for counselling of subjects who unpredictably encountered the disaster.