Carl Reinhold August Wunderlich

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Carl Reinhold August Wunderlich (1815-1877) was a German physician, pioneer psychiatrist, and medical professor. He is known for his measurement of mean human body temperature of 37 °C (99 °F).^[1]

He was born in Sulz am Neckar on August 4, 1815 and attended grammar school in Stuttgart. At the age of eighteen he began his medical studies at Tübingen University, where he completed his final exams in 1837. In 1838 he worked as assistant at St Catharine's Hospital in Stuttgart, and wrote his MD thesis. Two years later he wrote his MD habilitation on internal medicine at Tübingen University

In 1846 he was appointed Professor (ordentlicher Professor) and head of the general hospital at Tübingen. Four years later he moved to Leipzig University as Professor and Medical Director of the university hospital. There he introduced clinical pedagogy, combined with a rigorous methodology of diagnosis, and empirical observation of patients. He introduced temperature charts into hospitals, holding that fever is not a disease, but a symptom. The thermometer he used was reportedly a foot long, and required 20 minutes to register the temperature.

He was known for his lectures on psychiatry and the on the "pathology and therapy of illnesses of the nervous system." In 1871 he was appointed to the Department of Medicine's organisational commission for the construction and design of psychiatric hospitals.

He died in Leipzig on September 25, 1877.