Thank you for writing to us.
You are most likely having what is called as Telogen Effluvium
which is a condition in which one can have hair loss after extreme physical or emotional stress
You did have some physical stress in the form of dengue fever
which has resulted in some hair loss in your case.
In the vast majority of cases this hair loss will cease.
This does not require any medications.
Additionally, this also does not require any vitamins
There is no evidence to suggest that any vitamins or medications will be of any help.
Therefore I would recommend that you just relax for the time being.
This should go away in due course of time like in a matter of two to four more weeks at the most.
Dr. Zia MD