Single transverse palmar crease

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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 normally have.<ref name="nih">McPherson M.D., Katrina (2004-05-03). Simian crease. Medical Encyclopedia. United States National Library of Medicine. Retrieved on 2006-09-28.</ref><ref name="mednet">Definition of Simian crease. MedicineNet. MedicineNet, Inc. (2005). Retrieved on 2006-09-28.</ref> 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.

1 Medical
2 Other
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4 External links

[edit] Medical

The presence of a single transverse palmar crease can be a symptom of certain medical conditions, including genetic abnormalities such as Down syndrome or Noonan syndrome. However, such a crease appears in approximately 1 out of 30 people. Males are twice as likely as females to have this condition.

[edit] Other

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The pseudoscience of chiromancy or palmistry (palm reading) attributes special meanings or divinations to markings on the hand.

In chiromancy people with a single transverse palmar crease are very intense in their characteristics. They are said to have unusual psychic powers and are friendly with animals (most likely because of that). They have a hard time fitting in with others who have the normal pattern of palmar creases (called the "mahakah" in an Indian language). But since they share the same energies amongst each other, they get along very well together. It's just not so easy to find others with the condition (called the "perakee" in the same Indian language), so the single has to look closely to find another perakee.

Often individuals are unaware they have this feature. Some may have erroneous beliefs that the crease has grown because they moved their hands in a different way to other people, and they may be ashamed of it and try to hide it while others may think that the rest of the world has similar hand lines.