Hand chart for the Big Five personality dimension Conscientiousness (2016) Hand chart for the Big Five personality dimension Extraversion (2016) Hand chart for the Big Five personality dimension Neuroticism (2016) Hand chart for hypercalcemia (1971) Hand chart for arthrogryposis (1981) Hand chart for cri-du-chat syndrome - Hautleistenfibel (1981) Hand chart for Down syndrome (2011) Hand chart for Edwards syndrome (1981) Hand chart for fragile-X syndrome (2014) Hand chart for Holt-Oram syndrome (1981) Hand chart for Kabuki syndrome (A. Chudley) Hand chart for Klinefelter syndrome (A. Rodewald & H. Zankl, 1981) Hand chart for Cornelia de Lange syndrome (A. Rodewald & H. Zankl, 1981) Hand chart for Patau syndrome (1981) Hand chart for Prader-Willi syndrome (1971) Hand chart for rubella syndrome (1971) Hand chart for Smith-Lemli-Opitz syndrome (1971) Hand chart for Turner syndrome - Hautleistenfibel (1981) Hand chart for Williams syndrome (R. Rodewald, 1994) Hand chart for Wolf-Hirschhorn syndrome (B. Schaumann & M. Alter, 1976) Hand chart for XXYY syndrome (1971) Hand chart for XYY syndrome (1971) Hand chart for 18p- syndrome, a.ka. de Grouchy syndrome 1 (1981)

- Some of the available hand charts are displayed above - you can use the displayed pictures above for browsing -

Publication: november 26, 2015

Hand Charts for XYY syndrome!

XYY syndrome - a.k.a. Jacobs syndrome - concerns a relatively harmless genetic condition in which a human male has an extra male (Y) chromosome, giving a total of 47 chromosomes instead of the more usual 46. This produces a 47,XYY karyotype. Some medical geneticists question whether the term "syndrome" is appropriate for this condition, for, its clinical phenotype is normal; the vast majority of XYY males do not know their karyotype. Learning problems and delayed development of speech and language skills are about 3x higher in this population, despite normal/above average IQ.

Prevalence: close to 1 in 1,000 male births have XYY syndrome.

One very superficial hand chart is available for XYY syndrome describing only 2 characteristics in the dermatoglyphics, involving: 1) increased arches, 2) decrease of total ridge count - see picture below.

NOTICE: Individual hand features described below should not get associated in isolation with any theme; only combinations involving multiple hand levels have potential for diagnostic purposes.

Hand chart for XYY syndrome - Handbook of Clinical Dermatoglyphs (1971).
Hand chart source:
Handbook of Clinical Dermatoglyphs (1971), p.43;
authors: M.S. Elbualy & J.D. Schindeler

Other significant hand signs (not reported inside the hand chart):

XYY syndrome is also featured with a relative low frequency of palmar patterns (with a relatively high percentage for ID2), but a t' or t'' triradius may be present almost twice more often (source: Rodewald & Zankl, 1981; p.99).

XYY syndrome is associated with: weak muscle tone (hypotonia), hand tremors or other involuntary movements (motor tics) (source: Genetics Home Reference).

Clinodactyly involving the fifth finger is also often present (source: Bardsley et all, 2013).

All significant hand signs listed above for XYY syndrome together cover only two out of the nine perspectives of the hand as defined according Multi-Perspective Hand Reading (including hand level 2, 5 & 8).

A summary of the most significant hand sign combinations in XYY syndrome (Jacobs syndrome) is described here:

Decoding the language of the hand:
hand sign combinations in XYY syndrome!

Hand charts are available for many other diagnostic issues;
start browsing HERE

Martijn van Mensvoort - Hand Research

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