[Xylose test in patients with attacks of headaches (migraine, Horton's headache)].

The aim of this work was to study digestive tract function by means of xylose test in patients with attacks of headaches. The investigations were carried out in 14 patients with migraine, 10 with Horton's headache and 1 patient with both these conditions. In patients with migraine or Horton's headache the xylose test was normal in 65% of cases, in the remaining 35% (8 patients, 4 in each group) xylose elimination was abnormal, because it was below 30%. The authors discuss the factors which could influence the abnormal results of xylose test in these patients, since they had no signs of other diseases than the mentioned headaches.