结果（1）持续的躯体形式的疼痛障碍最常见于头部、背部及四肢，疼痛性质多与疼痛部位有关；

Results: (1) Head and back was more frequent area of pain, and the characteristic of pain is related to the area of pain;

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结果（1）持续的躯体形式的疼痛障碍最常见于头部、背部及四肢，疼痛性质多与疼痛部位有关；

Results: (1) Head and back was more frequent area of pain, and the characteristic of pain is related to the area of pain;

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