"患持续言语症" can be translated into English as "suffer from persistent speech (or verbigeration)".
"Persistent speech" directly conveys the idea of continuous, uninterrupted speech, which is a characteristic feature of verbigeration.
"Verbigeration" is a more technical term in psychology and psychiatry, referring specifically to the compulsive, meaningless repetition of words or phrases, which aligns closely with the concept of "持续言语症" (persistent speech disorder or verbigeration).
In a clinical or academic context, "verbigeration" might be more appropriate, while "persistent speech" could be used in a more general or layman's description.