Later he became professor at Jena (1886) and Dorpat (1888), where he resigned in 1892 for political reasons, and became director of the city hospital at Magdeburg-Sudenburg, until his retirement in 1911.

[1] During this time he also served as president of the Magdeburg Medical Society, and as editor of the Zentralblatt für innere Medizin.

Unverricht published over fifty medical works, including Studien über die Lungenentzündung, his prize-winning doctorate thesis on pneumonia.

Equally notable, however, following Wagner (1863) and Virchow's (1866) initial clinical descriptions, in 1891[5] he developed the concept of an intimate connection between rash and muscle weakness that defined a new disorder: "...it seems to me that the skin appearance plays such an important role in the disease picture that the designation Polymyositis is not completely accurate.

[6] Unverricht, died of hemiplegia complicating chronic nephritis on April 22 1912, at Magdeburg, Germany.