We demand high grade evidence for other hypotheses but are happy to recommend CBT for the most severely ill patients and declare it safe despite there being no appropriate research on that patient group whatsoever. Have they ever actually seen someone who is unable to tolerate sound and light, and can't have anyone in their room, let alone tolerate sessions of CBT (which would cause them exquisite pain and cause immediate deterioration)?
http://tidsskriftet.no/article/3434755/en_GB
http://tidsskriftet.no/article/3434755/en_GB