When the hypnotic state is induced and deepened, ideas are more readily accepted into the unconscious levels of the mind. Positive suggestions can be made, which then effect changes in the waking state. These suggestions can address patterns of thinking, feeling and behaving, making hypnotherapy particularly useful for habit-based problems such as smoking and over-eating as well as reducing anxiety and panic attacks and alleviating conditions exacerbated by tension such as eczema. It can also be used to relieve pain in surgery, dentistry and child-birth.