Thank you all for your replies. I have been away for a while and not able to get back to these boards, and that is why I am late in my response.
I am not dehydrated as I drink about a gallon of non-carbonated, non-alcoholic fluids per day.
I did the pinch test and it came out fine. I do not notice the raised veins all of the time but rather after I have had my arms down for a while or as someone said, after using my arms a lot (such as repetitive motion doing house work).
I shall not worry about it any more and thank you again!
By the way, in watching television, I have noticed people in my weight range that are as young as their twenties that have them, too.