There are different types of ejaculation disorders, including:
Premature ejaculation. This is ejaculation that happens before or very soon after penetration.
Inhibited or retarded ejaculation . This is when ejaculation is slow to occur.
Retrograde ejaculation. This happens when, at orgasm, the ejaculate is forced back into the bladder rather than through the urethra and out the end of the penis.