Objective To study the clinical features of primary chronic daily headache(PCDH).
目的探讨原发性慢性每日头痛的临床特点。
Given its effects on nociception and muscle contraction, botulinum appears to be an attractive agent in the prophylaxis against chronic daily headache or tension-type headache.
由于它在伤害感受器和肌肉收缩的效应，肉毒素在预防慢性每日头痛或紧张型头痛方面有很大的吸引力。
Given its effects on nociception and muscle contraction, botulinum appears to be an attractive agent in the prophylaxis against chronic daily headache or tension-type headache.
由于它在伤害感受器和肌肉收缩的效应，肉毒素在预防慢性每日头痛或紧张型头痛方面有很大的吸引力。
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