Has this type of hair got a special name?

Occasionally (maybe once every third year) I find a special hair growing often (if I recall it correctly) on my lower arm. The special thing with this one is that it is very long (>4inch), very thin (my hair is very thick and this one is so thin I even wondered if it was hair. I have never seen such a thin hair on me or anyone else, including people with “normal” hair growth) and very very light (I have dark hair). Does anyone know if there is such a name for this type of hair? I suspect I’m not the first one finding one of these “unreal” ones.