Hi. According to your complaint it seems that you are suffering from telogen efflvium. There are many causes for it. External and internal factors.External factors like hard water, chemical treatment of hair, pollution etc. Internal factors like anemia, hormonal changes, deficiency of vit
b12, vit d3 etc..
Thyroid problems, diet, any surgery, stress etc.. You need to consult a dermatologist to find the exact cause of it and treat accordingly.
Next Steps
consult a dermatologist