My father told me, when the sperm often came out by itself. While the penis is not erect. He is 58 years old.
Sperm that comes out on their own or what is called "leaky sperm" can have various causes. It is also necessary to ascertain whether the fluid is really sperm or other fluids, such as pus or other secretions.
Normally sperm does not come out if you do not ejaculate. If the sperm comes out outside the time of ejaculation, the causes include:
Problems with the prostate, such as infection, prostate enlargement
Parasympathetic nerve disorders at the time of the urethra
Old age causes the urethral valve to malfunction
It is best for your father to see a urologist to determine the cause. A urologist will examine your father, determine the cause and provide appropriate treatment.