Cicatricial alopecia .
The destroyed follicles get replaced by scar tissue, resulting in permanent hair loss in the area.
How do you know if alopecia is permanent?
Hair loss can be permanent or temporary. It's impossible to count the amount of hair lost on a given day. You may be losing more hair than is normal if you notice a large amount of hair in the drain after washing your hair or clumps of hair in your brush. You might also notice thinning patches of hair or baldness.
Is alopecia a permanent disease?
Is alopecia areata curable? It cannot be cured; however, it's possible to regrow hair. For some people, regrowth will happen without any help. Because alopecia areata cannot be cured, people who have regrowth can have more hair loss later.