There are different forms of palm reading. Technically they are divided into four. These are

Dermatoglyphics: This involves a study of skin ridge patterns and formations found on the fingertips and within the palms themselves. Much research is being conducted continuously with regard to how certain patterns may be indicative of genetic problems

Chiromancy: This is the stream in which the in-depth study of lines is done.

Chirognomy: A study of genetic hand shape, finger shape, fingernails, texture, consistency, gesture, etc. Used by hand analysts in order to gain insight into aspects of the inner workings of the personality.

Chirology or Cheirology: This is the combination of all these branches.