Incurable is a word that means incapable of being cured or prevented. This definition is largely dependant on the medical definition, which stipulates that an incurable disease is one that cannot be healed or prevented. There are a number of different types of incurable diseases, which vary in their severity and characteristics. Some diseases are highly treatable with proper medication or therapy, while others are not curable at all and may only be managed. Some people choose to live with an incurable disease, while others may choose to pursue any and all treatments in an effort to extend their life.