Welcome to HCM
In this seson dengue is often seen ,but every fever and rash is not Dengue,
As Dengue is Viral fever
spreads by Mosquetos,Rash or Petichae which are seen in Dengue are typical and because of low platelet count
Even if platelet count is normal one can have Dengue,clinically Fever,Backache,Bodyache some times so severe you know it is also called break bone fever.
Treatment is according to symptoms.
Repeat the blood test
IgM &IgG antibodies
for Dengue may be done to confirm the Diagnosis
Best of Luck