Johann Lukas Schönlein traces a disease—fungal infection…

Johann Lukas Schönlein traces a disease—fungal infection of the scalp—to a parasite in 1839, for the first time.

Born in Bamberg, Schönleinhad had studied medicine at Landshut, Jena, Göttingen, and Würzburg.

After teaching at Würzburg and Zurich, he is called to Berlin in 1839, where he teaches therapeutics and pathology, becoming one of the first German medical professors to lecture in the native tongue instead of Latin.

He serves as physician to Frederick William IV.