Medical Ninjutsu

is a branch of ninjutsu, associated with healing, as well as the manipulation of their own or an enemies' body practised by Medical-nin. The application of medical ninjutsu requires very good chakra control, as well as extensive knowledge of poisons, herbs, medicines and the human body. The knowledge of medical ninjutsu can be used for a variety of purposes apart from pure healing, such as creating and treating poisons, doing autopsies or surgery, or deranging the target's nervous system.

Trivia

 * Tsunade, the most celebrated medical-nin in the world, was able to use an application of medical ninjutsu to engineer chakra-enhanced strength, something she has taught to her student Sakura Haruno, as well.