[Blood serotonin level in sciatica and the serotonin theory of migraine pathogenesis].

The blood serotonin level was determined by the fluorescent method of Ashcroft in 13 patients with sciatic pains during the pains and after the disappearance. The serotonin level was usually higher at the time of pains. In the discussion the author reminds that serotonin level falls during a migrainous attack and points out that the results of the present study confirm the specificity of sertonin level fall in migraine.