Hypereridism is a morbid state of hostile tension, arising from repeated provocations, which might result in explosive aggressive behaviour. When coupled with depression or obsessional behaviour, suicidal acts may become more frequent & successful. However, the impulsivity accompanying hypereridism might explain why so many suicides are unsuccessful. A study of suicide in Hong Kong suppports this idea. 3 case studies are included as illustration. (26 refs.) (RM)