Can herbal medicine help treat alopecia areata?

I discovered I had alopecia areata a month ago. It's not getting better with time, and it seems to be getting worse. I think I suddenly developed alopecia areata because I've been under a lot of stress due to personal issues and haven't been able to sleep properly. I've been taking care of it and trying to avoid stress, but why isn't it getting better? I was told to start treatment right away, so I went to the hospital, but I'm worried that hair loss medication might be harmful because of my liver problems. I'm also wondering if herbal medicine might help. Can people with liver problems also take herbal medicine? And how long will the treatment last?