Does narcolepsy and cataplexy usually get worse over time? is rapid change in severity over 12 months normal?

It slowly progresses: Both narcolepsy and cataplexy gradually worsen over decades. Rapid change is likely some other factor; consider a repeat overnight sleep study to rule out coexisting sleep apnea, restless legs, poor sleep efficiency, or other causes of unrestful sleep. General tips: daytime naps, regular sleep-wake cycle, good sleep hygiene, routine activity during daytime, aerobic exercise, and sunlight exposure.

Not really : Would be unusual unless it is a recent problem. Is DX of narcolepsy already established? What is getting worse if the cataplexy then maybe it is recent change of medication.