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Kindly attach an image to know the severity of your problem.
It is usually normal to lose 80 to 100 hairs per day.
But yes, if you never had a hair fall and are suddenly witnessing it, it might be due to some underlying etiology.
As you mentioned about your recent illness, it might be pertaining to it.
Kindly attach an image to start the treatment accordingly because these days it is also common to see "androgenetic alopecia." But it occurs over a period of time.
Also, it usually involves the front part of the scalp.
So for now, you can be started on a good multivitamin capsule like Revilus (Biotin, Calcium Pantothenate, Iron, Zinc, Folic acid) or Keraglo Forte (Gamma Linolenic acid and multivitamins).
If required, you can add saw palmetto, Minoxidil, and Finasteride. Consult your specialist doctor, discuss with him or her and with their consent take the above medicines.
For more information consult a dermatologist online --> https://www.icliniq.com/ask-a-doctor-online/dermatologist