Case Lab · Type B · Boundary

F28

Persistent, but no delusion at all

Beatrice, 63, has for the past five months had a persistent tactile sensation of insects crawling on her skin, which she finds distressing but does not attribute to any specific cause, conspiracy, or persecutor — she simply describes it as 'a strange sensation that won't go away.' She has no delusional beliefs of any kind, no auditory hallucinations, no thought disorder, and no mood episode. A dermatological and neurological work-up, along with a substance history, are all unremarkable. The pattern has remained consistent across five months of follow-up.