Palmar creases are the natural lines or folds that appear on the palm of the hand.
Palmer creases are formed during fetal development and are unique to each individual.
There are three main types of palmar creases:
1. Simian crease: A single crease that runs across the palm, also known as a single transverse palmar crease.
It is less common than having two creases on the palm.
2. Sydney crease: A variation where a short second crease appears parallel to the major palm crease.
This can sometimes be associated with certain medical conditions, but not always.
3. Double crease: The most common type, where there are two distinct creases running horizontally across the palm.
Changes in the creases or their patterns could sometimes indicate an underlying medical condition.