Pathological changes occur in dengue haemorrhagic  Fever ( DHF):: (A) Focal haemorrhages and congestion., (B) Coagulopathy with thrombocytopenia., (C) Haemoconcentration., (D) All of the above.
Answer is D. PATHOLOGIC CHANGES The predominant organ Changes in DHF are due to:

Focal haemorrhages and congestion;
Increased vascular permeability resulting in oedema in different organs;
Coagulopathy with thrombocytopenia; and
Haemoconcentration.