I'm 16 and have been masturbating for some time now, probably since I hit puberty at the age of 8 or so. For all the time I have being doing it I thought it was perfectly normal for one to have very little feeling of any kind(Rather I didn't think my lack of feeling was abnormal). After reading a bit on this site however and talking with a few of my more open friends, I have come to the conclusion that I may have a nerve problem of some sort.

The only feeling I have during masturbation is during ejaculation, and even then it is very short and faint. I have no feeling whatsoever in my foreskin(I am uncircumcised) and very little to none on the head of the penis. I can't really explain it well, when I am masturbating, if it was not for the knowledge of what I am doing, I would not even be able to tell something is going on down there. I have had multiple occasions where I may be erect without noticing it simply because I can't feel when my penis is erect.

I had at first attributed the problem to my families history of genetic quirks, so far everyone of my brothers and sisters has started puberty at a very early age. My sister had full body hair by the age of 6 and was already starting menstruation and I myself have had multiple tests done from blood work to MRI's and CAT scans because my body has a problem with growing/advancing faster than it should be. If it does turn out to be a problem caused by genetics there is not much I can do about it and I will simply have no choice other than to live with it, but if there is a chance of some other cause I would like to investigate for any possible solutions.

Does anyone have some advice they may be able to give me? I'm open to just about any suggestion at this point.