Thought disorders

• What is circumstantiality?


  Unable to answer a question without giving excessive, unnecessary detail - returns to original point
• What is tangentiality?


  Wandering from a topic without returning to it
• What are neologisms?


  New word formations
• What is derailment of thought?


  Illogical and unexpected jumps from topic to topic without any links - failure to answer the question
• What is a flight of ideas?

  Leaps from one topic to another without links between them - does answer original question
• What is a thought block?

  Patient abruptly breaks off the conversation and is silent before resuming on a different topic