Hello, As per my clinical experience, the issue of semen leakage during sexual dreams, thoughts and during night is part of normal physiology and not called incontinence (which usually pertains to urine and stool holding capacity). The condition is called night fall (though it can happen at day time as well when you have penile erection via sexual thoughts, seeing porn movie or photographs, watching animals doing sex or else). There is semen production for 24 hours and 365 days in your body which flows when it is full capacity inside and other semen cannot be held, the previous one is spilled by the body. If you start regular practise of masturbation by your hands or engage in sex activities (if you are matured and you have life partner or girlfriend with mutual understanding and terms), there will be very less or minimal spillage of semen as the amount is cleared in usual quantity. Do not seek medicines for the normal ailment of your body and believe that you do not have any disease at all. Start enjoying your masturbation or sex from today only. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel, General Surgeon