Answer:
Thought blocking syndrome
Explanation:
Thought blocking is a thought condition usually caused by a mental
health condition such as schizophrenia. During thought blocking, a
person stops speaking suddenly and without explanation in the
middle of a sentence. People who experience this symptom report
that they feel like the thought has been removed from their brains.
Thought blocking can occur at any time during speech, but is
particularly common when a person is discussing a psychologically
sensitive topic. For example, a person might begin discussing
childhood abuse with her therapist and then stop speaking midway
through the sentence. When the therapist asks the person to
continue, the person may respond that she completely forgot what
she was going to say.