The aim of this research was to determine risk for family appearance of the recurrent headache (non-migraine and migraine). The recurrent headache can be understood as being a heterogeneous state, consisting of some more, still not found, hereditary disposition factors which altogether, interacting with surrounding factors give the recognizable clinical picture. The current heredity concept suggests multifactor heredity. The research was conducted in Vojvodina, the Northern Province of Serbia. The population of Vojvodina is around 2 million people belonging to more than 20 different ethnic groups. During the 20 years period (1988-2008), 30363 children aged 3 to 17 years were tested, independent of the place of birth. The presence of headaches similar to those tested was compared among all the members of the family within three generations. Positive family data of the recurrent headaches was detected among 98,6% children with migraine headaches, 64,7% children with non- migraine headaches, and 32,4% children without recurrent headaches. The relation among the members of the nuclear family (contingency quotient of 0,429) is significantly stronger than the relation to the members of wider family (contingency quotient of 0,338). The probability of a child having the migraine headache, and not the non-migraine one, is 0,664 for a mother, 0,644 for a father, 0,411 for a father`s mother, - 0,175 for a mother`s mother, 0,165 for a mother`s father, and - 0,102 for a father`s father having similar recurrent headaches.
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