Do varicoceles cause infertility, and when is treatment needed?
A varicocele is enlargement of veins around a testicle. It may affect fertility in some men, but does not automatically mean infertility. Decisions depend on examination, symptoms, semen analysis and the couple’s circumstances, not imaging alone.
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When might treatment help?
Repair may be discussed for a palpable varicocele with infertility and abnormal semen findings. Fertility surgery is generally not recommended for a varicocele found only on imaging. Absence of sperm requires a separate specialist discussion.
Improvement is not guaranteed pregnancy
Semen measures may improve without guaranteeing conception. Partner fertility, available time and alternatives matter. A specialist explains surgery, embolisation or observation and the risks of each option.
Do not label every change a varicocele
A new lump, increasing pain or clear testicular size change needs examination. Sudden severe testicular pain is urgent; do not wait for a routine varicocele appointment. Testicular growth also matters when assessing adolescents.
Related reading: How should I prepare for semen analysis, and what does the result mean?.