[Thrombocyte function in vasomotor and migraine headaches].

The number of circulating platelet aggregates was assessed using a modification of the method of Wu and Hoak. The index for the number of circulating aggregates was 1.04 +/- 0.12 for 35 healthy probands aged 35 +/- 11 years and was different from the index of 25 patients with vasomotor headache aged 37 +/- 14 years of 1.1 +/- 0.14 (P less than 0.1). The number of circulating platelet aggregates with an index of 1.38 +/- 0.24 was significantly higher (P less than 0.001) in 48 migraine patients aged 36 +/- 12 years.