Miyazaki University Hospital and Miyazaki Prefectural Miyazaki Hospital are able to perform both physical and psychiatric treatment in parallel. We retrospectively examined 589 cases during a five-year period between April 1, 2012 and March 31, 2017 involving individuals who visited the emergency room of these two institutions for suicide-related behavior and received psychiatric treatment. We divided the cases into a young group (up to 34 years old), a middle age group (35-64 years old), and an elderly group (65+years old), and conducted the examination. The young group consisted of 203 cases, the middle age group consisted of 304, and the elderly group consisted of 82. In the young group, a high percentage were women, and they had repeated suicide-related behavior, chose jumping as the suicide attempt method, were diagnosed as being F43 (reaction to severe stress, and adjustment disorders) or F6 (disorders of adult personality and behaviour), had no sleeping prescriptions, and visited the psychiatric wing of either hospital after finishing physical treatment. It was suggested that sleeping pills were prescribed carefully to young people, and that the psychiatrists on staff endeavored to maintain a relationship with the patients after the physical treatment was finished. In the middle age group, a high percentage exhibited repeated suicide-related behavior, and they chose overdose as the suicide attempt method, had a history of psychiatric consultation, had received multiple prescriptions for sleeping pills, and continued going to or being hospitalized at psychiatric hospitals that they visited for regular treatment after physical treatment. A lack of carefulness was noted when it came to the evaluation of suicide-related behavior risk for the middle age group. In the elderly group, a high percentage were men, and they had severe cases, had never attempted suicide before, had no psychiatric consultation history, chose poisoning as the suicide attempt method, were diagnosed as being F3 (mood disorders), and were hospitalized in the psychiatric wing of either hospital after having finished physical treatment with no periodical follow-up. It is difficult for elderly people to talk about their symptoms and to ask others for support, demonstrating that careful evaluation of suicide-related behavior risk and primary suicide prevention are needed. In each age group, the characteristics of the suicide-related behavior were different; therefore, the necessary precautions may differ. We plan to develop this study and build an effective suicide prevention system in Miyazaki in the future.
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