I have tightness or slight pain in my skin. Which treatment is suitable: oral medication or topical medication?

Lately, I have been very worried because I have noticed my hair falling out as I age. I used to have thick hair, but recently I’ve felt it slipping out little by little, which makes me anxious. I am not the type to care much about my appearance, but hair loss is something that really bothers me.

I’ve heard from others that there are two types of hair loss treatment: oral medication and topical medication. I am wondering which one would be more effective to start with. In particular, I feel tightness and even slight pain in the skin on the crown and forehead, so I am curious which treatment would be suitable in this case. I have heard that oral medication can affect the entire body, and that topical medication requires consistent use to be effective. I think the opinions of those who have actually experienced this would be very helpful.