Bumps on the veins can be referred to as superficial thrombophlebitis, according to MedlinePlus from the National Institutes of Health. These bumps can occur on a person's arm or any other part of the body where the veins are close to the skin. They range from simple inflation of the vein to a dangerous blood clot.
Several conditions may cause bumps on the veins; if this occurs, seek treatment, recommends MedlinePlus. A physician determines if the lump is the result of repetitive movement of exercise or something more serious. He may decide the lump is due to some underlying medical condition. Treatment from a physician determines the necessary course of action. If, in fact, the bump is a blood clot, the doctor may prescribe an oral medication regimen or administer a course of intravenous drugs or a regimen consisting of medications combined with physical therapy.
The doctor conducts a visual exam and takes note of vital signs including pulse and blood pressure. In some cases, blood tests may be required to provide the physician with more detailed information, explains MedlinePlus. With the result of these tests, the doctor is able to accurately diagnose and treat the superficial thrombophlebitis if necessary.