A 33-year-old married woman presents with severe anxiety that has worsened over the past year. She reports excessive worry that something terrible will happen to her husband when he travels for work, repeated nightmares about losing him in an accident, reluctance to leave home without him, and physical symptoms including nausea and headaches when he departs for business trips. She calls him multiple times daily to confirm he is safe and has begun refusing social invitations unless he accompanies her. She has declined a promotion requiring travel because it would mean being away from him. These symptoms began in her mid-20s. She had a similar pattern of distress about separating from her parents as a child.