Abu Zayd al-Balkhi ابو زید احمد بن سهل بلخی
Al-Balkhi is believed to have been the first to diagnose that mental illness can have psychological and physiological causes.
Full Name: Abu Zayd Ahmed ibn Sahl Balkhi .
Arabic: ابو زید احمد بن سهل بلخی
Born: 850 AD.
Died: 934 AD.
Origin: Shamistiyan, Balkh, Khorasan (modern day northern Afghanistan).
Famous for: Geographer, Mathematician, Physician, Psychologist and Scientist.
Contributions:
One of the first Islamic encyclopedia of medicine titled Firdaws al-Hikmah
Legacy:
He founded the “Balkhī school” of terrestrial mapping in Baghdad.
Al-Balkhi is believed to have been the first to diagnose that mental illness can have psychological and physiological causes.
He was the first to suggest four types of emotional disorders: fear and anxiety; anger and aggression; sadness and depression; and obsessions.
Articles
https://en.wikipedia.org/wiki/Abu_Zayd_al-Balkhi
https://iranicaonline.org/articles/abu-zayd-balki
Books attributed to Abu Zayd al-Balkhi