This is often a very sensitive problem. However, it is not uncommon. There are a few reasons for people to have such problems. First, this could be a medical problem where a Urologist, (a medical specialist in mens physical problems such as what you describe), could be of assistance and can check things such as blood pressure in that specific region of your body. A Urologist can also check any other possible medical problems related to this. Sometimes if individuals have a primary care physician, (especially if they are comfortable with them), they can examine for some of these problems and/or refer you to a Urologist. Sometimes people have these problematic responses are reacting to either relationship or family problems or esternal problems such as occupational or financial. Lastly, sometimes individuals are sensitive to various medications, (which is a medical question you can ask your physician) or sensitive to things like alcohol. This is so especially if they have recently started to drink or their drinking has increased. If your physical reaction is related to stress-counseling, either Couples or Individual , may be useful down the road. I always recommend that individuals who have this problem start with ruling out medical problems. Good Luck!