Abu Ali al-Hussein Ibn Sina famous with the name of Avicenna, was born in Persia in the 
980 at Qishlak Afshona, near Bukhara, Uzbekistan. By the age of eighteen years, possessor of an 
immensest philosophical-scientific culture, undertakes the doctor profession. Avicenna was 
studious of Hippocrates and Galen therefore developed the theory of four humors and the 
derived complexions. Avicenna is also known to fuse philosophy and medicine all in one. 
Follower of Aristotle and Plato, its infuence on the western medicine was enormous, 
especially through a work that became soon one of the medicine books more used in the