My arm is tan from the sun. High up on my arm, on the front there is a very small white circle and 2cm next to that is a very small white line that is slightly elevated. the small circle is not elevated. Looking for some ideas on this...

i also have this i went to the doctor for it a while back, it's caused from the sun i have like two on my neck they don't really bother me much i get them because of over exposure from the sun but maybe your case is different if your really worried check with the doctor.