We present the case of a child with frontal sinusitis, who also suffers from a severe intracranial disease. Although sinusitis intracranial issues are rare nowadays, they include a wide range of serious entities such as meningitis, brain abscesses and thrombosis of the cavernous sinus. We emphasize the importance of early diagnosis and an adequate initial empirical treatment to prevent possible complications. Once they are presented, an aggressive surgical medical treatment is required for its resolution.