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Scalp hair patterns in mental subnormality.

T J David, C M Osborne

    Journal of Medical Genetics
    |April 1, 1976
    PubMed
    Summary

    Scalp hair patterns differ in individuals with Down's syndrome and other forms of mental subnormality. Specific whorl patterns were observed, though practical diagnostic value remains limited.

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    Area of Science:

    • Dermatology
    • Genetics
    • Neurology

    Background:

    • Scalp hair patterns, including whorl formations, have been studied for potential associations with developmental conditions.
    • Previous research suggested links between hair patterns and certain neurological or genetic disorders.

    Purpose of the Study:

    • To investigate specific scalp hair patterns in individuals with various forms of mental subnormality.
    • To compare these patterns with those observed in a healthy control group.

    Main Methods:

    • Examination of scalp hair patterns in 1901 healthy subjects and 1789 patients with mental subnormality.
    • Categorization of patients included Down's syndrome, microcephaly, and unspecified mental subnormality.
    • Statistical analysis to identify significant differences in hair whorl distribution and frontal hair patterns.

    Main Results:

    • Patients with Down's syndrome showed a significant excess of midline occipital whorls and a deficit of right-sided occipital whorls.
    • A distinct frontal hair 'up-sweep' was noted in a small proportion of microcephaly patients.
    • Individuals with unspecified mental subnormality exhibited a significant deficit of multiple occipital whorls.
    • Cutis verticis gyrata was incidentally observed in 15 subnormal patients, predominantly males.

    Conclusions:

    • Specific scalp hair patterns are associated with certain types of mental subnormality, notably Down's syndrome.
    • While theoretically interesting, the direct clinical or diagnostic utility of observing these hair patterns in individual patients is considered limited.

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