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Genetics of Somatoform Disorders

Svenn Torgersen, DPh
Arch Gen Psychiatry. 1986;43(5):502-505. doi:10.1001/archpsyc.1986.01800050108014.
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• I investigated the contribution of hereditary factors in somatoform disorders. Fourteen monozygotic and 21 dizygotic index twins and their co-twins were personally interviewed. The results showed a concordance of 29% in monozygotic and 10% in dizygotic pairs. However, similarity in childhood experience seemed to influence the concordance rates. Thus, even if somatoform disorders appear familial, the transmission may be environmental. Furthermore, the study showed a high frequency of anxiety disorders, especially generalized anxiety disorders, in the co-twins of somatoformdisordered twins.

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