He doesn't need continuous treatment because his symptoms are intermittent rather than persistent.
他不需要持续的治疗，因为其症状是间歇性而非连续性症状。
What kind of pain is it? Intermittent or persistent?
是怎样的疼？是间歇的还是持续的？
Expression of pain are often very complex, can be expressed in persistent pain, or intermittent pain, and some patients also showed dull pain or tingling.
疼痛的表现也往往很复杂，可以表现为持续性疼痛，或间歇性疼痛，有的病人还表现为钝痛或刺痛。
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