Thanks for writing in.
The symptoms you are describing can be due to ALOPECIA AREATA
It is a autoimmune condition.
The treatment can be minoxidil
,topical steroids and irritant etc.
You can use tablet follihair
and minoxidil safely.When used properly minoxidil is very safe and effective.
Follihair is a biotin preparation it is very safe and you can take it .It strengthens the hair and prevents hair fall.
Also few treatments would be needed to treat this.
I encourage you to visit a dermatologist
for proper diagnosis and treatment.
Hope this helps.