Right frontal meningioma presenting as delusional parasitosis.

Central nervous system tumours can occasionally present with psychiatric symptoms as the only manifestation and can often pose diagnostic challenges. A man in his early 60s presented to the psychiatry outpatient department with delusional parasitosis. His old age and an episode of urinary and faecal incontinence made the clinician consider neuroimaging at the very first visit itself. He was detected to have a right frontal meningioma with features of intracranial hypertension with midline shift, and he underwent emergency surgery. His delusional symptoms completely resolved after surgery and did not recur during the follow-up period of 2.5 years. A right frontal meningioma presenting as delusional parasitosis has probably not been reported in the literature before, and the case is being reported to highlight the rarity of its presentation, the importance of eliciting a detailed clinical history and the need for early neuroimaging in these cases.