

AZOOSPERMIA
Azoospermia is the complete absence of sperm in the neat and centrifuged sample of semen. It is always important to remember that the semen analysis has to be repeated at least twice if a diagnosis of Azoospermia is to be entertained. The Etiology of Azoospermia can either be Obstructive or Non-Obstructive.
In Obstructive Azoospermia there is an obstruction to the path the sperm travels from the testis to the penis. The obstruction could be in the testis, the epidydymis, the vas deferens (the vas could also be absent) or the ejaculatory duct.
ASTHENOZOOSPERMIA
It is this inability of the sperm to move efficiently inside a woman’s body which is vital to reach the egg and cause pregnancy. Yes, your guess is correct, asthenozoospermia causes Infertility in men. The motile and healthy sperm needs to move through the woman’s reproductive tract to fertilise the egg for it to result in a pregnancy.




OLIGOZOOSPERMIA
Oligozoospermia is diagnosed when the concentration of sperm in semen is less than 15million/ml. As in Azoospermia, the semen analysis should be repeated twice. There are many reasons for Oligozoospermia. Endocrinopathies are a predominant reason for a reducing sperm count. Prolactinomas are notorious for reducing sperm counts.
Genetic factors like Y chromosome microdeletions occur in 6% of men with low sperm counts. An abnormal karyotype is seen in about 2% of these men. Varicoceles have always been a point of semantics for ages. However, there is a lot of irrefutable evidence to prove that varicoceles do affect semen parameters.
TERATOZOOSPERMIA
Teratozoospermia refers to abnormal sperm morphology. Sperm morphology refers to the size and shape of the sperm. Any deviation from the normal size and shape of the sperms is referred to as teratozoospermia. A normal appearing sperm has an oval elongated head with the dark staining nucleus (DNA) and 1 or 2 empty spaces (vacuoles). The head is connected to the tail by a mid-piece which has a neck. Under the microscope at least 4-5% of sperms should appear normal. To be more specific teratozoospermia is diagnosed when more than 95% of sperms in a man’s semen sample is of abnormal morphology. However, this is highly subjective as it depends on the person looking under the microscope. Toxins, infections and Varicoceles again contribute to abnormal sperm morphology.




INFERTILITY
Among partner either male or female or both can be the cause of Infertility.
Causes of Infertility in Men
- Abnormal sperm production
- Abnormal sperm Functioning
- Problem in the delivery of the sperms
- Pre-ejaculation
- Smoking alcohol consumption and intake of drugs and medicine.
- Cancer under treatment.