目的：報告一位網際網路相關妄想症案例，並回顧從1997至2005年，文獻上所報告的16位個案。 病例報告：一位18歲的女性聲稱交往三年的法國男網友突然失去聯絡。不久，從網路傳來數通有關其法國男友、男友之父母及祖父母因她的過失相繼自殺。個案對此網路事件深信不疑，因而陷入罪惡妄想及重鬱症。經過門診支持性心理治療與藥物治療四週之後，其妄想及重鬱症狀已明顯緩解。 結論：由於這些個案研究報告顯示，新科技概念對此類特殊妄想之病因、形式及臨床治療有特殊的影響。因此網際網路相關妄想，如同網際網路成癮，可能漸漸會被接受成為一種新興的精神病理類型。

Objective: We report a case of internet-related delusional disorder and review the psychiatric literature of 16 reported cases from 1997 to 2005. Case report: This 18-year-old female student claimed that her virtual boyfriend who she had never met suddenly lost contact and that another internet acquaintance had sent messages relating the suicide of her boyfriend, his parents and grandparents. The delusion was also associated with major depressive episode. The internet-related delusion and depressive disorder showed good response to combined treatment by pharmacotherapy and psychotherapy in four weeks. Conclusion: The present case and our review of the literature suggest that the internet can have specific influences on the etiology, form and implications for the management of delusional disorders. Internet-related delusion, just like internet addiction may represent a novel form of psychopathology.