What is Alopecia?
Alopecia is an autoimmune disorder that can lead to hair thinning or total baldness. Some people experience it episodically, like when they get stress-induced alopecia (or telogen effluvium). Other people experience lifelong or chronic alopecia that can be permanent if not treated properly. The number one cause of it is genetics - you're born with an immune system that attacks your own body in response to something else, like hormones or stressors.