Conclusion Alternating hemiplegia occurred before 18 monthes of age, and complicated paroxysmal phenomena and cognitive impairment, flunarizine may be an effective agent in treating AHC.

• 结论本病的主要特征为18个月内起病的发作性交替性偏瘫，伴锥体外系症状及智力障碍，氟桂嗪治疗本病有效。