A well-known Harvard psychiatrist who treats patients with eating disorders and has written textbooks on the topic has surrendered his medical ­license after officials found he engaged in sexual misconduct with a bulimic patient.

The Board of Registration in Medicine accepted the resignation of Dr. David B. Herzog Wednesday. The board said that after hearing from the woman who had been his patient, it took “the most serious, immediate, and impactful action ­allowed by law in order to protect the public and prevent this physician from ever practicing medicine again.’’