This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
All of the following are true about Classical dengue fever except - 
Select and explain. 
A. Case fatality is low, B. Break bone fever, C. Positive tourniquet test, D. It is a self limiting disease
C: Positive tourniquet test
Answer: C: Positive tourniquet test 
Explanation: Positive tourniquet test is seen in Dengue haemorrhagic fever not in classical dengue fever.It is the most common haemorrhagic phenomenon. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 264