Headache is a common problem (Rangell, 1953). Cohen (1939) concluded that relatively few cases were organically based and Shapiro (1955) in an American series found that only four out of a hundred cases presenting with headache could be explained on an organic basis, even though there are fifty odd causes of the symptom (Harris, 1936).
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N. L. Gittleson (1961) studied this question.
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