There are two types of orgasms that produce little to no ejaculate: dry orgasms and retrograde ejaculation. The difference between a dry orgasm and retrograde ejaculation is that a dry orgasm produces no ejaculate and it does not come out of the penis. Retrograde ejaculation begins to make its way out the urethra but does not make it out, rather it goes back up the urethra and into the bladder. After a retrograde ejaculation you will notice that your urine is cloudy. Retrograde ejaculation is not dangerous or harmful and can be treated if undesired.
The causes for lack of ejaculate in either case vary. Causes of a dry ejaculation can be seen when men don't produce enough semen in order to ejaculate. This can be caused by a wide variety of issues from genetic abnormalities of the reproductive system to medication. Retrograde ejaculation can be a from of duct obstruction as the bladder neck tightens to prevent the flow of semen. Again, typically, urination will be bit cloudy as the sperm will have gone into the bladder.
If it is ongoing, it may be an indication that a medication is causing it or there is something medically needing attention. Therefore, it is always best to see your physician if it continues. A variety of medications can cause this; examples are those that treat high blood pressure and mood disorders, however, there are many others so check with your pharmacist for more information on the medication that you are taking. Examples of medical conditions that can cause a dry orgasm in men are diabetes, prostate disease, certain neurological impairments and spinal cord injuries.
How to Achieve Retrograde Ejaculation
Something just to make note of in regard to Tantric dry orgasms-
Many men study Tantra so that they may learn to have multiple orgasms. Males that experience these using Tantric types of techniques refer to them as dry orgasms, even though they are technically retrograde ejaculations. To experience a Tantric Orgasm, you focus built-up sexual energy away from your genitals and recirculate arousal without ejaculating.
Taoists and other practitioners of alternative medicine sometimes encourage retrograde ejaculation to conserve the energy of the body. While this does not hold the sperm in the body as it comes out with the next urination after being pushed into the bladder, it can create a sense of control. This is done by training the pubococcygeal muscle (PC), however, it should not be used as a way to prevent pregnancy as it is not reliable in keeping all ejaculate from coming out. See PC Exercises for men for more Information.
By doing Tantric techniques you can still feel smooth muscle contractions around your pelvic floor. Reportedly, they feel like strong orgasms that are held inside the body remaining powerful while not expelling ejaculate. After a Tantric dry orgasm, arousal typically decreases enough so that during intercourse you can enjoy more vigorous stroking without ejaculating and in some cases without having an orgasm. Tantric lovemaking rises slowly as it savors pleasure, reaches a peak, and then repeats over and over.