Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain hair loss can occur due to a number of causes and long standing illness can be a cause but flu causing hairloss is less likely but in case if you had severe infections, it might be a cause..
Other causes can be
hormonal imbalances causing Androgenic Aloepecia or Pattern
Baldness that seems more probably in your case while stress,
nutritional deficiency etc are also common causes..
I would suggest you to start taking Biotin supplements along with
multivitamin supplements..
Onion juice is said to cause hairgrowth but no confirmed results can be seen..
You can apply
Minoxidil 5% solution over the scalp..
You can also consult a Trichologist and he can advise you to take oral Finesteride..
Maintain clean scalp and wash your scalp every alternate day..
Take a nutritious diet and add more of vegetable and fruits to it..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.