During the follow-up, symptoms concurrent with headache, such as odour phobia, dizziness and balance disturbances became more typical, whereas restlessness, flushing and abdominal symptoms became less marked.

• 调查结果显示，头痛的伴随症状，如气味恐怖症、头晕和平衡障碍变得更加典型，而坐立不安、脸红和腹部症状变得不显著。