Modern medical science is just beginning to catch up with the possibilities that a palm reading can give you in understanding if an individual has affinity towards certain diseases or even in revealing congenital disorders.
Since the time of Aristotle it was know that the human hand could reveal certain physical conditions. Even medical and dermatology books contains chapters on this aspect. Many physicians today have researched and announced important findings in skin patterns and lines and their relations to certain diseases. This also offers a diagnosis tool for identifying congenital diseases and looking for early stage solutions for the same.
It is seen that hand signs often carry indications on allergies, immune system, diabetes, migraines and headaches, eye problems etc. Of course diagnosis solely based on palm features is not advised, and you should always visit expert physicians if you suspect anything based on your palm readings.