Hi,
You may be having a fungal infections. a doctor would be able to help you better with the diagnosis and treatment.you need not worry to much as after treatment the hair will get better and the hair fall would decrease.
meanwhile, use some anti-histamines for the itching and try to keep the scalp free from moisture.
keep us psoted and let us know if you may need more help.
best regards
i reccomend going to dermatolosist. they are really helpful. it may take awhile before you find the right stuff to work. if you need someone to talk to im here. i have had the same problem. i am 33 years old.