I can understand your concern.
One cannot predict at what stage such complications will occur.
Firstly prevention is always better than cure. So take all precautions against mosquito bites.
Secondly, once you have any symptoms, it would be better if a patient consults a doctor in person for management rather than becoming doctors themselves.
Drinking plenty of water and fluids, having soft diet, taking adequate bed rest and controlling temperature is the key to dengue treatment and avoiding complications.
Dr. Anil kumar jain.
There is no way we can predict in which dengue patients, complications of Dengue Hemorrhagic Fever or Dengue Shock Syndrome develop. They both are life threatening conditions and time to intervene is very less if they develop, hence doctors advise admission and close monitoring once platelets drop beyond a certain threshold. However, IV fluids and platelet transfusions when indicated dramatically reduce the mortality rate associated with Dengue. During the fever phase (first 5 days), staying hydrated and controlling fever is the key thing. Once platelets start dropping, then it's the right time to be admitted into a good hospital with round the clock blood bank facility.
With all this said, The BEST way to handle dengue is by preventing mosquito breeding in your neighborhood. Many people in India still do not have basic amenities and lack of hygiene and awareness among them (even in cities) along with commitment from Govts is the key to achieve that.
Good news is that a vaccine is going to come very soon (2017) which reduces chances of Dengue by half, but not 100% like other vaccines. Atleast something is better than nothing considering the sheer burden dengue puts on our healthcare industry and the risk to life it loses to small children and susceptible adults.