My 10 year old son just got out of the shower.I could see all the veins in his shoulders, chest , down his arms, and in his upper leg and around his groin area. They were bright blue. He s not fair skinned, nor is he overweight or underweight . I ve never seen this on him before. Is it something to be concerned about? Additional information, he s not very active, always says he s too tired.mostly he sits around.