Symptoms and Complication of Dengue Haemorrhagic Fever (DHF)

Definition of Dengue Haemorrhagic Fever (DHF):

According to WHO, dengue hemorrhagic fever is defined as “a dengue like illness with thrombocytopenia (100 x 10˄9/L) and a hemoconcentration (hematocrit elevated by 20%). It is a much more severe disease than classical dengue fever, with a fatality rate that approaches 10%.

Dengue haemorrhagic fever symptoms
Fig: Dengue haemorrhagic fever symptoms

Characteristics of Dengue Haemorrhagic Fever (DHF):

DHF is characterized by –

  • Initially the picture is same as classical dengue.
  • Then haemorrhage (especially skin and GIT) and shock.
  • Thrombocytopenia (platelet count < 1, 00,000 / cu mm of blood).
  • Rise of the haematocrit > 20%.

Clinical Features or Sign and Symptoms of Dengue Haemorrhagic Fever:

1. Prodromal (2 days): Malaise, Headache

2. Acute:

  • Fever: Acute onset, high, continuous or , saddle back, with break on 4-5th day and lasting 2-8 days,
  • Headache, backache, arthralgia,
  • Generalized pain-break bone fever,
  • Pain on eye movement, lacrimation,
  • Anorexia, nausea, vomiting,
  • Depression,
  • Relative bradycardia,
  • Lymphadenopathy,
  • Rash transient macular in first 1-2 days,
  • Maculopapular, scarlet,
  • From 3-5th day on trunk, spreading centrifugally sparing palm and sole,
  • May desquamate on resolution,
  • Prostration,
  • Scleral injection.

3. Convalescence- slow

4. Any of the following hemorrhagic manifestation: Petechiae, purpura, echymosis, pistaxis, gum bleeding and haematemesis.

5. Features of shock– manifested by-

  • Sweating on forehead,
  • Rapid thread pulse,
  • Hypotension,
  • Shallow breathing,
  • Cold clammy skin,
  • Restlessness,
  • Oliguria.

Grading Level of Dengue Haemorrhagic Fever (DHF):

Grading severity or level of DHF have mentioned in the below:

1. Grade-I: Fever accompanied by nonspecific constitutional symptoms the only hemorrhagic manifestation is appositive tourniquet test.

2. Grade-II: Above sign plus spontaneous bleeding.

3. Grade-II: Above sign plus circulatory failure.

4. Grade -IV: Profound shock: undetectable BP and pulse (Grade III and Grade IV known as DSS).

Complications of Dengue Hemorrhagic Fever (DHF):

All the complications of DHF have listed in the below:

1. Intracranial bleeding,

2. Encephalopathy,

3. Convulsions,

4. Renal failure,

5. Hepatic failure,

6. Hemolytic uremic syndrome,

7. Iatrogenic problems like-

More questions related to this article:

  • What is dengue haemorrhagic virus?
  • What are the characteristics of dengue haemorrhagic fever?
  • Write down the clinical features of dengue?
  • Write down the clinical features of dengue fever.
  • What are the clinical features of dengue haemorrhagic virus?
  • Write down the grading level of dengue haemorrhagic virus.
  • What are the complications of dengue hemorrhagic fever?

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top