Am I balding?!?!?

[Goats1996]

Hey guys figured I would come here to ask this simple yet complicated question.... Am I balding. Some details about me I'm 19 turning 20 in a couple months and I've notice a great amount of hairdos lately. I've mostly been noticing a very itchy scalp and when I itch it just stay itchy with a build up of skin and multiple hairs falling out when I itch. But it's especially bad in the shower, when I shampoo I will loose probably close to 40-50 hairs just in the shower alone. I know they say the you can lose up to 100 hairs a day thing, but this just seems excessive. Any help is great I've been on Nizoral for my itchy scalp but that's about it
Also my dad is bald, my older brother has shown no hair loss symptoms. Also what is the difference between a maturing hairline and balding

Thank you guys in advance! .