A simian line is a single crease that runs across the palm of the hand. It is formed before birth when the proximal and distal palmar creases fuse into one line. Males are more likely than females to have a simian line, and it can run in families. A simian line has been associated with several genetic and developmental disorders.

2. Also known as
• Single palmar crease
• Transverse palmar crease

3. The word “Simian”
comes from the
Infra-order
“Simiiformes” of
Order Primata, that
have a similar
craese on their
palms

4. “A simian
crease is a
single line
that runs
across the
palm of the
hand.”

6. Simian Line Variants

7. The fusion of the
proximal and the
distal palmar crease
occurs before the
of fetal life.

9. Males are
twice
as likely
as females
to have
this line
It tends to run in families.

10. • Down’s Syndrome
• Cri du Chat Syndrome
• Klinefelter’s Syndrome
• Fetal Alcohol Syndrome
• Trisomy 13
• Rubella Syndrome
• Araskog-Scott Syndrome
• and Many Others… (Click Here)

11. Palmistry

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• AArrmmiinn VVaann BBuurreenn
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