 Kohnstamm then began as a general practitioner in Königstein im Taunus, a small town in Hesse.There, he became more and more interested in neurology and psychiatry.His wife, Eva, daughter of Johannes Gad - one of Kohnstamm's Berlin professors, agreed to have occasionally depressive patients as guests in the house, who then got chores assigned in housekeeping, gardening or minding the children.