Dry skin, especially on the palms, is also known as Xerosis. It is one of the many complaints most specifically by people living in areas which are having arid temperatures. This is also common to people who are most often than not exposed to the sun.
Dry Skin on the Palms (image from photos2.demandstudios.com)
However, heredity also plays a vital role in this condition. Aside from that, aging can also be one cause of dry skin on the palms too.
Other instances that contribute to dry skin on the palms include wearing of rubber or latex gloves. At home, the use of harsh soaps and cleansers can also dry skin and even hot water.