According to Entertainment Weekly, St. John took a leave of absence in October "to undergo psychiatric treatment after a reported scare regarding his mental health."
St. John has been open about his personal battles with depression following the death of his son, Julian, just over three years ago. Julian's death, which was ruled a suicide, resulted in a lawsuit against the facility that had been charged with Julian's care.
Last week, St. John took to Instagram to announce his "comeback" and added that he was "#indacut" and "ready." The actor's post quickly drew thousands of likes and messages of support and encouragement from fans.
St. John's on-air return will happen sometime in mid-April, and Neil will find that much has changed in Genoa City since he last set foot in town.
Would you like to share a message of support with Kristoff? We want to hear from you -- and there are many ways you can share your thoughts.