Down syndrome (trisomy 21) is a genetic disorder caused by the presence of a trisomy on chromosome 21, and it is the most common cause of intellectual disability. The hand system in Down syndrome varies always clearly in at least 4 out of the 5 major perspectives from the hand in ordinary people; the proportion & skin in both the palm and the fingers are always involved. Usually the 1st major perspective - function - also gets involved with hypotonia (low muscle tone) and/or hyperextensible finger joints (a charteristic that relates to flexible hand motorics which is very commonly present in Down syndrome); however, especially regarding the aspect of hypotonia (which is always present after birth in Down syndrome) there is no clear standard to assess hypotonia in adults. Discover the details with Multi-Perspective Palm Reading!

The most significant minor LEVEL of the hand system in Down syndrome concerns the skin's dermatoglyphics [level 8]. The dermatoglyphics on the fingertips are typically featured with loop fingerprints (ulnar loops in all ten fingers are typical, a radial loop on the ring finger and/or pinky is also typical) + the palm is typically featured with a high positioned axial triradius in the lower section of the palm (hypothenar zone, a.k.a. 'mount of moon' in palmistry), usually combined with transverse alignment of the main lines in the upper section of the palm.

The hand proportions seen in people who have Down's syndrome are also very typical: small relative to their body height, and usually the proportions resemble the so-called (hyper)brachycheir hand shape [level 3]. The extraordinary proportional dimensions of the hand in Down syndrome usually also become manifest in various finger shapes [level 5] Some of the typical hand characteristics in Down's syndrome are summarized in the advanced multi-perspective palm reading hand chart below.