Hello dear Thanks for your query Your words suggest you might be suffering from Telogen Effluvium.The stress due to disease and the medications have induced the hair follicles to enter the telogen phase synchronously.Thus the hair fall is occuring synchronously leading to this visible extreme hairfall. Don t worry . Generally, recovery is spontaneous and occurs within 6 months. Telogen effluvium is a reactive process, which resolves spontaneously.So treatment usually is limited to reassurance. Any reversible cause of hair shedding, such as poor diet, iron deficiency, hypothyroidism, or medication use should be corrected. Topical minoxidil can be used, but it is not so effective in telogen effluvium. Do consult your dermatologist . Hope this helps. Take care.