Platelet function in childhood migraine.

Platelet function in vitro and in vivo (ADP-induced platelet aggregation, circulating platelet aggregates, beta-thromboglobulin plasma levels) has been studied in children with common migraine, in headache-free intervals. Migraine patients demonstrated increased circulating platelet aggregates when compared with controls. Moreover, two of ten patients had pathological beta-thromboglobulin levels. These data indicate that in some children with migraine there is an abnormality of platelet function during headache-free periods.