From the age of twenty-eight, Karl Hel, professional violinist, suffered from epilepsy and periodos of depression, some of which lasted for months. Hospitalized at the psychiatric hospital of Gugging in 1949, he began drawing in school notebooks that never left him and which he liked to show. Most of his drawings are copies made from journals or magazines that he reproduced in a very particular style — a personal a personal version of “pointillism,” evolving with time, according to Pr Navratil. Initially characterized by the single line, his style became gradually more affirmed and and started to change to constitute subjects made up of a multitude of points, leading to lines or circles at the final stage of his production.