Dengue Doctor Near Me Dengue viruses ( DENV ) are members of the family Flaviviridae, genus Flavivirus. Susceptible humans become infected after an infected female Aedes mosquito takes a human blood meal. The three clinical phases of dengue are febrile phase, critical phase, and recovery phase. The critical phase is not seen in all infections. The febrile phase is characterized by fever. Other common symptoms include headache, body ache, muscle pain and a transient rash. Typical findings include low platelet, low white blood count and deranged liver function tests. At the end of fever, a small proportion of patients develop bleeding, shock, and organ failure which usually lasts 24 to 48 hours. Signs of impending critical illness include persistent vomiting, severe abdominal pain, bleeding, lethargy and restlessness. During the recovery phase, hemorrhage resolve and vital signs stabilize. A pruritic eruption may appear. Polymerase chain reaction ( PCR ) to detect viral genomes and antigen tests are typically positive during the first week of illness. Virus specific IgM positivity develops around the fourth day of illness and is widely used to make a presumptive diagnosis. Outpatient management, under supervision of a specialist, is appropriate for patients with presumptive diagnosis of dengue in the absence of warning signs or coexisting conditions like pregnancy, infancy, old age, diabetes, renal failure, obesity. Patients should be instructed to take plenty of fluids and watch for signs of dehydration. Inpatient management is warranted for patients with dengue and warning signs of severe infection.