Yes, there is a word for the fear of hallucinating, and it is called "Phantasmophobia."
Phantasmophobia is a specific phobia characterized by an irrational and intense fear of hallucinations or of seeing things that are not present. People with this phobia may experience extreme anxiety or panic when confronted with situations that they believe could trigger hallucinations or when they encounter anything that resembles a hallucination.
Like other specific phobias, Phantasmophobia can lead to avoidance behaviors, where individuals may go to great lengths to avoid situations or stimuli that they associate with the possibility of experiencing hallucinations.
As with any specific phobia, if Phantasmophobia significantly impacts a person's daily life or causes distress, it is advisable to seek professional help from a mental health provider or therapist. They can offer various treatment options, such as cognitive-behavioral therapy (CBT), exposure therapy, and relaxation techniques to address and manage the fear.