Does early FND treatment shorten time to diagnosis or improve outcomes?

The short version: the evidence does not answer whether early FND treatment shortens time to diagnosis or improves outcomes. No study in this retrieval tests that question.

The retrieved evidence contains nothing that compares early versus late treatment for FND. One study of a one-week physical therapy protocol for functional movement disorders showed that 60.4% of treated patients had good long-term outcomes versus 21.9% of controls [3]. But that study did not measure time to diagnosis or compare early versus late treatment. It compared a specific intervention to usual care, not timing.

A separate study of cognitive behavioral therapy for psychogenic nonepileptic seizures found reduced seizure frequency and improved psychiatric outcomes over 12 weeks [2]. Again, no comparison of early versus delayed treatment. The study enrolled patients who already had a diagnosis, not patients diagnosed early versus late.

The previous answer's Italian registry data showed that diagnostic delay is common, especially in adolescents, with a mean of 4.4 doctors seen before diagnosis [1]. But that registry did not measure whether earlier treatment would have changed outcomes. It documented the delay, not its consequences.

The evidence here simply does not include a trial that randomizes patients to early diagnosis and treatment versus delayed diagnosis and treatment, or that tracks outcomes by time to diagnosis. Without that design, the question remains unanswered. The claim that early treatment improves outcomes is plausible on mechanism, but it is not proven by any study in this retrieval.

My call: the evidence does not show whether early FND treatment shortens time to diagnosis or improves outcomes. Confidence: not clear.