Okay kiddo, so lichen planopilaris is a big fancy term that means there's something wrong with your hair and skin. It happens when your body's immune system gets confused and thinks your hair and skin are bad guys that need to be attacked. This can make your hair fall out and make your skin super itchy and red.
It's like when you have soldiers in your army, but they start attacking your own teammates instead of the enemies. That's pretty much what's happening in your body with lichen planopilaris.
Doctors can help treat it by giving you medicine to calm down your body’s immune system and make it stop attacking your hair and skin. It might take a while for your hair to grow back, but the medicine will help stop it from getting worse. Don't worry, you'll get through it!