How did Al-Razi contribute to the field of medicine?
Al-Razi contributed to the field of medicine by writing over 200 books on medicine and philosophy including a medical book that had most of the medical knowledge known to the Islamic world in it. Also he promoted experimentation and observation, he also believed that a doctor had to look at the background of the patient and look at any sicknesses that a close family member had, instead of looking at the symptoms to determine the sickness Al-Razi looked for what caused the symptoms, and he understood how the brain and nervous system operated muscles.