This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Symptoms & Signs , Subject name: Psychiatry
Which of the following is/ are a thought disorder? 
Select and explain. 
A. Circumstantiality, B. Tangentiality, C. Prolixity, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Ans. is 'd' i.e., All the aboveThought disordersDisorder of form (form is the structure of thought)Disorders of stream(flow of through)Disorders of possession(Control of thought)Disorders of content(Themes)o Loosening of associationo Derailmento Tangentialityo Substitutiono Omissiono Transitory thinkingo Drivelingo Desultory' thinkingo Neologismso Poverty of content of speecho Flight of ideaso Thought blocko Circumstantiality'o Prolixity'o Thought retardationo Perseverationo Obsessions and compulsiono Thought insertiono Thought withdrawalo Thought broadcaso Delusions referenceo Persecution, misinterpretationo Grandiostyo Nihilism etc.o Depressive cognitions (ideas of warthlessness, helplessness, warthlessness)o Overvaluedideas