 As a pupil of pediatrician Karl Oskar Medin, whom he held in high esteem, Wickman predominantly devoted himself to the studies of infantile paralysis (poliomyelitis).Besides his thesis, his 1907 publication "Beiträge zur Kenntnis der Heine-Medin’schen Krankheit" has been rated as innovative.In the field of neurology he also published several articles.