Stretch marks are not harmless. However, there may be the need to see the doctor. There are certain factors that causes stretch marks on the skin. This I have listed in my previous post on the causes of stretch marks. When you notice stretch marks on your skin without clear cause such as those mentioned in my previous post like pregnancy, gaining rapid weight or rapid loss of weight, then there may be the need to visit a medical professional.
The kind of physician you consult to help out should be someone with experience and knowledge of the skin.
The medical professional will examine you to establish the cause of the marks on your skin. During the course of his or her examination, you might be asked some questions. The doctor might carry out tests if he or she notice that there is an abnormalities in the appearance of stretch marks on your skin. The doctor can later prescribe drug that will help to reduce the appearance of striae on the skin.