American Society of Hematology disorders of the hematopoietic, hemostatic, and lymphatic systems, and disorders of the interaction between blood and the blood vessel wall. An American hematologist has trained in a subspecialty program approved by the American Board of Internal Medicine or the American Board of Pediatrics, or has acquired a comparable education in the field by alternate means, and is Board Certified (or eligible) in the subspecialty of hematology. Diagnostic expertise of a hematologist A hematologist is expert in the investigation, diagnosis, and management of disorders of the aforementioned organ systems through the use of the medical history, physical findings, specialized clinical laboratory
History of mental disorders the very epitome of rational thought and as the founder of philosophy, Socrates freely admitted to experiencing what are now called "command hallucinations" (then called his 'daemon'). Pythagoras also heard voices. Hippocrates (470–ca. 360 BC) classified mental disorders, including paranoia, epilepsy, mania and melancholia. Through long contact with Greek culture, and their eventual conquest of Greece, the Romans absorbed many Greek (and other) ideas on medicine. The humoral theory fell out of favor in some quarters. The Greek physician Asclepiades (ca. 124–40 BC), who practiced in Rome, discarded it and advocated humane treatments, and had insane persons freed from confinement