My sides of my head are quite substantially thinner than anyone elses in my family everyone has thick hair except me, when hair grows long it gets really gappy. What can cause this
I am the same way. There is a sort of gap in the hair in front of my ears as it is very thin. I thought maybe it's because my hair is shorter than it was before, but I don't think so. It doesn't seem to have gotten any worse in the past few years though.