No sperm in semen. Azoospermia means there is no sperm in a man's ejaculate. This can either be from obstruction or lack of production. A urologist with fertility training can make that diagnosis and provide treatment options. Often, men that have no sperm in semen make a small amount of sperm that can be retrieved from the testicle for in vitro fertilization.
Evaluation. You need a physician to investigate if azoospermia is from a blockage or lack of production. There are surgical treatments for blockages, some medical therapies for production problems.
Unblock vas. Azoospermia may be due to a blockage. Might be correctable and thus curable. Please see a urologist specializing in infertility for a work up. You might be candidate for sperm aspiration or direct sperm extraction from testis followed by invitro fertilization (ivf) or intra-cellular sperm injection (icsi).
Azoolpermia. Treatment for azoospermia clearly depends upon the cause; which can be structural (varicose vein in the testicular area), hormonal (low lh and testosterone) or genetic (klenifelter's syndrome). Once the diagnosis is established one can consider therapeutic ioptions.