User:Graeme Bartlett/hypothenar crease

The hypothenar crease or longitudinal hypothenar crease is a flexion crease that may occur on the palm of human hands on the ring finger (ulnar side) and extending from the edge of the palm towards the centre. It is classified as a minor crease. It only occurs occasionally and may be diagnostic of some syndromes.

A hypothenar crease can form before birth as a disruption to the basal skin layer. It interrupts friction ridges, and is maintained in the same position throughout life.

A hypothenar crease is prominent in Coffin-Lowry syndrome.

In Downs syndrome a hypothenar crease often occurs in combination with a Sydney crease or simian crease, often replacing the little finger distal digital crease.

Chimpanzees and orangutans also have a hypothenar crease outlining the hypothenar region on the palms.

In palmistry the hypothenar crease can be termed the "crescent of intuition" o "line of intuition".