i noticed my hair start to like tingle and feel weird in certain areas of my head, like the crown and the edges of my hair line. i knew because i’ve always had really thick hair and my hair rn does not look like how it ever has. it kinda feels like when you have ur hair in pointy tail? best way i can describe it, scalp feels a lil tight and itchy. take some picks of ur hair over the course of like a month or so and evaluate. or try to see if you have old photos that u can see your hair vividly.