Alice Miller initially endorsed primal therapy. Later, however, she wrote a communication to her readers in which she expressed some reservations about it. In that communication, she stated that primal therapy could be dangerous when conducted by therapists who are not properly trained. She also stated that there was "too much faith" in cathartic discharge, claiming that the relief was sometimes temporary. She also voiced criticisms about the structure of the initial three-week intensive phase, claiming that it could provide opportunities for unscrupulous therapists. She warned of the dangers of developing an "addictive dependency" to pain.