Talk to Andrologist on Sign Of Baldness

Doctor, I am a 22-year-old male concerned about progressive hair thinning that began recently. While my frontal hairline and overall hair growth remain good I have noticed a distinct reduction in hair density, particularly on the mid-scalp and crown (vertex) area. This thinning becomes most apparent and exposes a 'gap' in my scalp when my hair is wet or under bright light. I previously suffered a minor strike no bleeding and it was healed after 2 days to my head that left a minor scar—could this specific injury be the cause of my overall hair loss?