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In humans, a 'single transverse palmar crease' is a single crease that extends across the palm of the hand, formed by the fusion of the two palmar creases that people typically have.^[1][2] Because it resembles the usual condition of simian animals, it is also known as a 'simian crease', although this term has fallen out of favor due to its pejorative connotation.

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Medical

References

See also

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Medical

The presence of a single transverse palmar crease can be a symptom of certain medical conditions such as Fetal alcohol syndrome and genetic abnormalities including Down syndrome and Noonan syndrome. However, such a crease appears in approximately 3% of the world population. Males are twice as likely as females to have this condition.

References

1. Simian crease McPherson M.D., Katrina
2. Definition of Simian crease

See also

★ Dermatoglyphics

★ Palm reading

External links

★ An example of a single transverse palmar crease