Alternating hemiplegia of childhood: presentation of two cases regarding the extent of variability.

Alternating hemiplegia of childhood is an episodic neurological disorder, the diagnosis of which is solely clinical. In this report, two patients with alternating hemiplegia, one as a representative of the classical picture and the other with unusual features, are presented by video display. Some clinical manifestations and the variability of symptoms are discussed with regard to their place in the diagnosis of the disease. (Published with videosequences).