Are there people who should not be hypnotized?

Medical doctors and mental health professionals may indicate that hypnosis is contraindicated for a number of conditions, including:

Schizophrenia and other mental health disorders.
Developmental disabilities.
Use of certain drugs.
Ongoing psychiatric treatment.

Although hypnosis has seen some amazing results over a wide spectrum of conditions, hypnotherapy is generally an adjunct therapy and is not a substitute for medical or psychiatric care.