Does mumps in males affect fertility?

Acute parotitis, also known as “mumps” or “big neck disease,” primarily affects children and adolescents, though adults may also contract it. Following onset, acute parotitis is typically treated with antiviral medications, antibiotics, and other supportive therapies. Without prompt and active treatment, complications may arise, leading to more severe illness and greater harm to the body. So, does mumps affect male fertility?

Does mumps affect male fertility?

Mumps can potentially impair male fertility. In cases of mumps—or epidemic parotitis—the mumps virus may, in a small proportion of patients, invade the testes, damaging testicular tissue structure and thereby compromising fertility. Most cases of mumps or orchitis—especially those occurring in childhood—present with prominent swelling and discomfort localized to the parotid glands and face. Consequently, patients often overlook concurrent orchitis; however, infertility (e.g., azoospermia) may only become apparent later, such as after marriage.

Mumps can be categorized based on whether it occurs before or after puberty. It is generally believed that mumps occurring post-puberty causes relatively less physiological damage. By this stage, the testes have already undergone significant development, and clinically, such cases are classified as “post-pubertal mumps”—a condition associated with a higher likelihood of successful sperm retrieval. Not all males with mumps develop orchitis; clinically, the incidence is estimated at approximately 20%. However, among those who do develop orchitis, the degree of testicular damage tends to be more severe.

If symptoms suggestive of mumps appear, timely medical evaluation and diagnosis are essential, and patients should actively cooperate with prescribed treatments. We hope this information proves helpful to you.