I have circular hair loss the size of a 1 won coin. I would like to inquire about home care methods.

hello,
The reason is that I am writing this because I was embarrassed when I looked in the mirror a while ago and discovered a round bald spot about 1cm in diameter on the back of my head.

I was always a bit stressed, but I never thought I would actually develop alopecia areata.
It's not that big yet, but I'm worried that it might spread or get bigger.
Before seeking immediate treatment, are there any effective home care methods I can try at home first?

I heard that alopecia areata can be cured if managed well in the early stages. Could you give me some advice?